Sumikko Gurashi

A San-X character and lifestyle brand built around shy, imperfect animal and food characters who feel safest in the corner.

Last updated August 31, 2026

Overview

Sumikko Gurashi is a Japanese character and merchandising brand created by San-X and launched in 2012. Its name is commonly translated as “life in the corner,” reflecting the central idea that some people and creatures feel most comfortable occupying the edges of a room, a café, a classroom, or society rather than standing in the middle. The property was created by Yuri Yokomizo, a graphic designer who developed the characters from notebook doodles made while she was a student. Yokomizo joined San-X as a young designer and turned her personal observations about shyness, social unease, and the comfort of familiar spaces into a group-based character concept. The principal Sumikko characters are Shirokuma, a polar bear who dislikes cold weather; Penguin?, who is uncertain whether he is really a penguin; Tonkatsu, the uneaten end piece of a pork cutlet; Neko, a timid and anxious cat; and Tokage, a dinosaur who hides his identity by pretending to be a lizard. Their unusual identities are central to the brand’s appeal. Rather than presenting flawless, energetic, or aspirational mascots, Sumikko Gurashi gives audiences characters who are anxious, left over, displaced, or unsure of themselves. They find reassurance in small routines and in being together. Supporting Minikko characters include objects, plants, food remnants, and other creatures such as Furoshiki, Zassou, Tapioca, and Obake. San-X released the first Sumikko Gurashi products in September 2012, beginning with stationery and plush toys. The property subsequently expanded into clothing, bags, kitchenware, household goods, books, collectibles, digital applications, electronic toys, and console games. The Sumikko Gurashi Collection developed into a substantial miniature play-and-display line featuring palm-sized plush characters, dollhouses, furniture, outfits, and themed accessories. Product themes regularly rotate around seasons, cafés, schools, travel, traditional Japanese shops, sports, food, and other everyday settings. This approach allows San-X to refresh the range without abandoning the recognizable emotional world of the characters. The brand also became a publishing and screen property. Books began appearing in 2014, including illustrated storybooks, character profiles, activity books, fanbooks, and editions containing small merchandise. Several books were written or illustrated by Yokomizo, including works that explore the characters’ backgrounds and relationships. Sumikko Gurashi has been adapted into mobile games, Nintendo 3DS titles, Nintendo Switch games, short animated programs, and theatrical films. The first feature film arrived in 2019, followed by films in 2021, 2023, and 2025. The films use gentle, largely non-verbal storytelling, music, narration, and visual comedy to extend the brand’s themes of belonging and mutual support. The franchise has achieved strong commercial and cultural recognition in Japan. San-X reported that Sumikko Gurashi represented a substantial share of its original-character merchandise sales in the mid-2010s. Publicly reported figures cited by reference sources state that annual product sales were approximately 20 billion yen in 2019, with millions of plush toys and books sold; these figures describe the wider product business at that time rather than a separately reported corporate segment. Sumikko Gurashi also placed highly in Japanese character popularity surveys and won the Grand Prize at the Japan Character Awards in 2019. Although rooted in Japan, the property has developed international recognition, particularly in Taiwan and among North American specialty, bookstore, and character-goods retailers. In Chinese-speaking markets it is known by names including “Corner Creatures” and “Little Corner Partners.” Its enduring positioning combines kawaii design with a more subdued emotional message: being nervous, different, or on the margins does not prevent someone from finding comfort, friendship, and a place to belong. As of…

History

Sumikko Gurashi originated inside San-X in 2012, when graphic designer Yuri Yokomizo developed a group of characters based on doodles she had made in the corners of her notebooks as a student. The initial creative insight was that corners can feel reassuring: a person can sit in the corner of a café, classroom, or room and feel less exposed than in the center. Yokomizo transformed that spatial preference into a character philosophy. The characters are not conventionally heroic or ambitious. They are hesitant, self-conscious, incomplete, displaced, or literally left over, but they become more comfortable when gathered together. The first products were released in September 2012 and consisted mainly of stationery and plush toys. The early range established the core cast of Shirokuma, Penguin?, Tonkatsu, Neko, and Tokage. Each character combines a simple visual silhouette with a small personal problem: Shirokuma dislikes the cold despite being a polar bear, Penguin? questions his own identity, Tonkatsu is the uneaten portion of a meal, Neko is timid and anxious, and Tokage conceals that he is a dinosaur. The Minikko supporting cast broadened the world with objects, plants, food remnants, ghosts, and other marginal figures. Neko’s place in the main group was influenced by a San-X survey of elementary-school children. Tonkatsu and later Tapioca helped shift the property away from a conventional collection of cute animals toward a broader emotional and material universe that included things people overlook or leave behind. Yokomizo has described the inspiration for these characters as connected to a feeling of pity or affection for leftovers. This became one of the brand’s distinctive creative signatures: a pork-cutlet remnant, a tapioca pearl, or a weed could receive the same narrative attention as an animal. San-X expanded the property through themed merchandise. Clothing, bags, kitchen goods, household products, seasonal accessories, and character collectibles joined the original stationery and plush range. The Sumikko Gurashi Collection introduced palm-sized plush characters and miniature environments, including houses, furniture, clothing, and accessories. Themes could be changed frequently while retaining the same characters, allowing the brand to move between winter clothing, summer beaches, cafés, schools, sports, traditional candy shops, travel settings, and other everyday scenes. Short stories, website content, promotional animation, and printed materials reinforced these themes and gave merchandise a narrative context. Publishing began in 2014. The first books introduced the characters’ profiles and depicted quiet episodes in homes, shops, cafés, parks, and other familiar places. Subsequent volumes added new settings and supporting characters, while picture books explored the personal histories of the principal Sumikko. The 2018 picture book Sumikko Gurashi: Sky-Colored Days became especially important because it presented the backstories of the main characters and explained how they came to share the corner. A bilingual Japanese-English edition followed in 2024. By the late 2010s, the property had developed a substantial publishing catalog and had sold millions of books according to figures cited by reference sources. The franchise entered games through Nintendo 3DS titles beginning in 2014. These games used care-taking, town-building, exploration, board-game, and mini-game formats rather than action-adventure mechanics. Nintendo Switch releases expanded the formula with party games, simulations, school and town creation, music games, and movie-related puzzle collections. Mobile games and electronic toys, including virtual-pet products, extended the brand into more persistent forms of character interaction. The games generally preserve the brand’s low-pressure tone by having players care for, decorate, organize, or accompany the characters. A major turning point came with the first theatrical film in 2019, released as part of the franchise’s seventh-anniversary period. The film’s success led to further animated features in 2021 and 2023, followed by a fourth film in 2025. Fanworks produced the films, which use gentle visual storytelling, narration, music, and emotionally direct plots to explore friendship, separation, responsibility, and belonging. Short television anime also appeared, including a 2023 series based on Sky-Colored Days and one-minute shorts broadcast through Nippon Television’s ZIP! programming from 2025. The brand’s commercial scale became increasingly visible during the 2010s. San-X stated that Sumikko Gurashi accounted for about 30 percent of its original-character merchandise sales in 2015, while reference sources reported approximately 20 billion yen in annual Sumikko-related product sales in 2019. The property ranked highly in Bandai character popularity surveys in 2016 and 2018 and won the Grand Prize at the Japan Character Awards in 2019. The number of related characters continued to grow, reaching approximately 60 by 2022 according to reference material. For its tenth anniversary in 2022, San-X introduced the Let’s Connect Through Sumikko project, which included community and tourism-related activities and positioned the characters as ambassadors for selected Japanese towns and areas. International distribution also expanded. The brand became established in Taiwan under Chinese names associated with corners and corner companions, and North American retail distribution began appearing in stores such as Books-A-Million and Barnes & Noble in 2017. By 2026, Sumikko Gurashi remained an active San-X property supported by new design themes, licensed goods, exhibitions, collaborations, games, books, animation, and film-related activity.

2026Continued expansion through collaborations and exhibitions
San-X continued the active property with new products, a Gokurakuyu and RAKU SPA collaboration, and the Sumikko Restaurant exhibition program.
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2025Fourth theatrical film released
Sumikko Gurashi the Movie: The Kingdom of the Sky and the Two Children opened in Japan on October 31, 2025.
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2024Bilingual edition of Sky-Colored Days
A Japanese-English bilingual edition of the important Sumikko Gurashi picture book was published.
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2023Third theatrical film and first short anime adaptation of Sky-Colored Days
The third feature film was released, while a short television anime adapted the characters’ origin stories from Sky-Colored Days.
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2022Tenth anniversary and Let's Connect Through Sumikko project
San-X marked the tenth anniversary with a community-oriented project that included tourism ambassador activities for selected Japanese locations.
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2021Second theatrical film released
The second Sumikko Gurashi feature film expanded the franchise’s cinematic storytelling.
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2019First theatrical film and Japan Character Award
The first Sumikko Gurashi feature film was released, and the brand won the Grand Prize at the Japan Character Awards.
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2018Sky-Colored Days picture book published
Yuri Yokomizo published a picture book presenting the backstories of the five principal Sumikko characters.
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2017Fifth-anniversary events and North American retail expansion
San-X held anniversary pop-ups, cafés, exhibitions, and a Yamanote Line collaboration, while Sumikko merchandise began appearing in North American stores.
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2015Brand becomes a major San-X merchandise property
San-X stated that Sumikko Gurashi represented about 30 percent of sales of its original merchandise, equivalent to approximately 5 billion yen in the cited period.
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2014First Sumikko Gurashi books and Nintendo 3DS game
The first character books were published, and the franchise entered console gaming with a Nintendo 3DS title developed by Nippon Columbia.
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2012First Sumikko Gurashi products released
San-X introduced the first stationery and plush products based on Yuri Yokomizo’s corner-inspired characters.
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Products and positioning

A comfort-oriented kawaii character brand that turns shyness, imperfection, leftovers, and social marginality into an inclusive lifestyle and entertainment proposition.

Sumikko Gurashi Plush ToysPlush and collectibles2012
Plush toys are the franchise’s foundational merchandise category. They range from small palm-sized characters to larger display plush, seasonal costumes, film designs, food-themed versions, and limited collaboration editions. The products make the characters physically huggable and support the brand’s emphasis on comfort, companionship, and collecting.
Sumikko Gurashi CollectionMiniature playsets and plush accessories2010
The Sumikko Gurashi Collection is a miniature product system built around palm-sized plush characters. It includes dollhouses, furniture, outfits, rooms, shops, and themed accessories. The line encourages display, collecting, and small-scale imaginative play while allowing San-X to refresh the setting through seasonal and situational themes.
Character StationeryStationery2012
Stationery was part of the original 2012 launch and remains a core category. Products include notebooks, memo pads, folders, writing instruments, stickers, cases, stamps, organizers, and school-oriented goods. Designs typically combine the characters with a particular season, activity, food, or everyday location.
Sumikko Gurashi BooksPublishing2014
The publishing range includes illustrated storybooks, character-profile books, activity books, fanbooks, manga-style vignettes, and books packaged with small goods. Important titles include This Is Where I Relax, It's Fine Like This, Sky-Colored Days, and Always by My Side. The books provide much of the franchise’s emotional and biographical world-building.
Sumikko Gurashi Video GamesVideo games2014
Sumikko Gurashi games have appeared on Nintendo 3DS, Nintendo Switch, and mobile platforms. Gameplay commonly centers on caring for characters, building towns or schools, exploring environments, playing board-game-style activities, solving puzzles, and participating in family-friendly mini-games. Nippon Columbia developed many of the principal console releases.
Sumikko Gurashi Theatrical FilmsAnimated film2019
The film series adapts the characters into gentle feature-length adventures. The stories use a mixture of narration, music, visual comedy, and emotionally focused plots involving friendship, responsibility, separation, and belonging. Feature films were released in 2019, 2021, 2023, and 2025, with animation production associated with Fanworks.
Electronic Toys and Virtual PetsElectronic toys2020
Licensed electronic products let users care for or interact with Sumikko characters through handheld devices, virtual-pet formats, activity toys, and character-themed digital interfaces. These products extend the franchise’s central idea of companionship into recurring play rather than one-time ownership.

Flagship businesses

Sumikko Gurashi plush characters
Sumikko Gurashi Collection
Character stationery and lifestyle goods
Sumikko Gurashi picture books
Sumikko Gurashi theatrical films
Nintendo 3DS and Nintendo Switch games

Marketing campaigns

2026Gokurakuyu and RAKU SPA Collaboration
Japan
From August 6 to August 25, 2026, 11 Gokurakuyu and RAKU SPA group locations offered Sumikko Gurashi decorations, themed goods, and a social-media sticker promotion.
Outcome. The collaboration expanded the brand into leisure, bathing, hospitality, and location-based experiences.
Source
2026Sumikkogurashi Exhibition: Sumikko Restaurant
Japan
San-X promoted an exhibition built around the Sumikko Restaurant concept, supported by limited-edition merchandise and an online-ordering schedule.
Outcome. The exhibition reinforced Sumikko Gurashi’s role as a collectible, experiential, and exhibition-friendly character property.
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2025The Kingdom of the Sky and the Two Children Film Campaign
Japan
The fourth film was supported by teaser materials, advance ticket products, theatrical goods, audience gifts, family-oriented cinema initiatives, and social-media participation campaigns.
Outcome. The campaign integrated cinema attendance, collecting, family engagement, and online fan activity around the new film.
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2025Sumikko Gurashi Asobi Studio Film Collaboration
Japan
Bandai Namco Experience’s Sumikko Gurashi Asobi Studio locations hosted a promotional campaign tied to the fourth film, with qualifying visitors receiving film-themed stickers.
Outcome. The campaign connected the film property with children’s indoor entertainment venues and merchandise purchasing.
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2022Let's Connect Through Sumikko
Japan
For the tenth anniversary, San-X launched a project linking Sumikko Gurashi with towns and regions, including tourism ambassador activities.
Outcome. The project presented the property as a community and regional-promotion platform rather than only a consumer-goods license.
Source
2019Keikyu Main Line Seventh-Anniversary Collaboration
Japan
San-X collaborated with the Keikyu Main Line on character-decorated trains and stations for the brand’s seventh anniversary.
Outcome. The campaign continued Sumikko Gurashi’s use of transport partnerships to create public-facing character experiences.
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2017Fifth Anniversary Events
Japan
San-X marked the fifth anniversary with pop-up cafés, exhibitions, birthday-themed merchandise, and other fan events around Japan.
Outcome. The anniversary program strengthened Sumikko Gurashi as an event, retail, and experiential brand in addition to a merchandise property.
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2017Yamanote Line Collaboration
Japan
Trains and stations associated with Tokyo’s Yamanote Line were decorated with Sumikko Gurashi characters as part of the fifth-anniversary activities.
Outcome. The collaboration placed the characters in a high-frequency public setting and broadened anniversary visibility beyond conventional shops.
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Brand decisions

2025Release the fourth film generationGeneration change
After three feature films, San-X continued the cinematic storyline with a new setting and newly introduced characters connected to a sky kingdom.
What changed. The Kingdom of the Sky and the Two Children opened in Japan on October 31, 2025, supported by theatrical goods and promotional campaigns.
Aftermath. The film extended the theatrical sub-franchise and introduced another major adventure setting for the characters.
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2022Connect the brand with regional tourism and community activitiesStrategy
The tenth anniversary provided an opportunity to give the property a social and place-based role beyond consumer products.
What changed. San-X launched Let’s Connect Through Sumikko and used the characters in tourism ambassador activities for selected Japanese towns and areas.
Aftermath. The brand gained another avenue for local partnerships, public events, and destination marketing.
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2019Enter theatrical animationProduct launch
The franchise had accumulated books, short promotional animation, games, and a sufficiently developed cast for a feature-length narrative.
What changed. San-X launched the first Sumikko Gurashi theatrical film, produced by Fanworks and distributed in Japan.
Aftermath. The film series became a recurring pillar of the brand and was followed by feature films in 2021, 2023, and 2025.
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2017Use anniversaries and public-space collaborations to deepen engagementStrategy
San-X was moving the property beyond shelf merchandise and into fan events, transportation environments, cafés, and exhibitions.
What changed. The company organized fifth-anniversary events and partnered with the Yamanote Line while also expanding distribution into North American retailers.
Aftermath. Sumikko Gurashi gained broader visibility as an experiential and internationally distributed character brand.
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2015Broaden the cast beyond conventional animalsStrategy
The brand’s emotional premise was increasingly linked to affection for things that were left over, overlooked, or uncertain.
What changed. Characters such as Tonkatsu and Tapioca helped establish food remnants and other non-animal figures as equally important members of the Sumikko world.
Aftermath. The broader character system enabled more varied merchandise themes and gave the property a distinctive identity within the kawaii market.
Share of San-X original-merchandise sales. Approximately 30 percent, or about 5 billion yen (2015)
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2014Extend the property into books and interactive gamesStrategy
The characters had established enough recognition through merchandise to support deeper narrative and interactive formats.
What changed. San-X and its publishing and game partners introduced character books and the first Nintendo 3DS title.
Aftermath. Books and games became recurring parts of the franchise’s ecosystem and helped explain the characters’ personalities and settings.
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2012Launch Sumikko Gurashi as a new San-X character propertyProduct launch
San-X sought a distinctive character concept based on the emotional comfort of occupying a corner and on characters who were less conventionally cheerful than traditional mascots.
What changed. The company released stationery and plush products featuring Yuri Yokomizo’s group of corner-oriented characters.
Aftermath. The property developed into a broad merchandise, publishing, game, animation, and film franchise.
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Leadership

Name	Title	Tenure
Yuri Yokomizo	Creator and former San-X graphic designerformer	2012–

Recent events

2026San-X launched new 2026 Sumikko Gurashi design themes
Official San-X listings and announcements showed continuing seasonal and thematic product development for Sumikko Gurashi, including the Tenshi to Akuma na Shippos theme and related retail merchandise.
Product launchProduct generation
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2026Gokurakuyu and RAKU SPA collaboration
San-X partnered with the Gokurakuyu and RAKU SPA group for a Sumikko Gurashi collaboration held at 11 participating locations from August 6 through August 25, 2026, with themed goods and social-media participation incentives.
CampaignOther
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2026Sumikkogurashi Exhibition: Sumikko Restaurant
San-X promoted a Sumikko Gurashi exhibition themed around a fictional Sumikko restaurant, including limited-edition merchandise and an online-ordering program.
CampaignOther
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2026New digital temperature and humidity meter released
A Sumikko Gurashi digital temperature and humidity meter with a clock was introduced through San-X’s official product communications, illustrating the brand’s continued extension into practical household accessories.
Product launchOther
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2025Fourth Sumikko Gurashi theatrical film announced
San-X announced the fourth Sumikko Gurashi film, titled Sumikko Gurashi the Movie: The Kingdom of the Sky and the Two Children, for theatrical release in Japan on October 31, 2025.
Product launchOther
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2025The Kingdom of the Sky and the Two Children released in Japan
The fourth animated film opened nationwide in Japan on October 31, 2025. Its story follows two visitors from a sky kingdom and a water-shortage crisis, extending the franchise’s themes of cooperation and care.
Product launchProduct generation
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Sources

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