Shiisanmei
Shiisanmei is a Japanese doujin game production circle founded in 2009, known for the Sunday Greengrocer and Lionheart series.
Last updated September 29, 2026
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Overview
Shiisanmei (十三妹) is a Japanese doujin game production circle founded in November 2009 and beginning full-scale activities in January 2010. The circle creates and sells its own games, primarily through doujin events such as Comic Market and Comic TIAA, as well as through digital distribution platforms like DLsite and Melonbooks. Its representative and planner is Kazuhiko Torafune (虎舟和彦), with staff including蓬莱みかみ (original art and coloring) and しろくま (backgrounds). The circle's major works include the Sunday Greengrocer (日曜日の八百屋) series, released in multiple parts between 2010 and 2012, and the Lionheart (ライオンハート) series, first announced in 2012 and released in various versions from 2013 onward. Shiisanmei also produced related merchandise such as an original soundtrack and a voice drama. The circle remains active, with its most recent major release being Lionheart 2: Ten Takaku Sobieshi Tō (ライオンハート2 天高くそびえし塔).
History
Shiisanmei was formed in November 2009 as a doujin game production circle, with full-scale activities starting in January 2010. The circle's early years were focused on the Sunday Greengrocer (日曜日の八百屋) series, which was released in multiple parts at Comic Market and Comic TIAA events between 2010 and 2012. The series culminated in a complete edition (完全版) that was sold at various events and later through digital distribution. In 2012, Shiisanmei began work on a new project, Lionheart (ライオンハート), with a product page opening in January 2013 and a trial version released in September 2013. The game was developed using the KiriKiri engine and saw multiple version updates, with version 2.0 sold at events in May 2015 and version 2.1 released for download later that month. By August 2016, version 2.3 was available. A sequel, Lionheart 2: Ten Takaku Sobieshi Tō, was also released. The circle has also produced related media such as an original soundtrack and a voice drama for Sunday Greengrocer. As of the latest updates, Shiisanmei continues to be active in the doujin game scene.
Formation of the doujin game circle Shiisanmei.
Full-scale activities begin.
Distributed 'Sunday Greengrocer 2/7' at Comic Market 78.
Distributed 'Sunday Greengrocer 3/7' at Comic Market 79.
Distributed 'Sunday Greengrocer 4/7' at Comic Market 80.
Distributed 'Sunday Greengrocer 4/7' at Comic Market 81.
Distributed 'Sunday Greengrocer 7/7' and 'Sunday Greengrocer Complete Edition' at Comic TIAA 99.
Distributed 'Sunday Greengrocer Complete Edition' and original soundtrack at Comic TIAA 100.
Distributed 'Sunday Greengrocer Complete Edition' and original soundtrack at Comic Market 82.
Distributed 'Sunday Greengrocer Complete Edition' and original soundtrack at Comic TIAA 101.
Products and positioning
Doujin game circle producing original adult-oriented games for niche PC market.
Sunday Greengrocer (日曜日の八百屋) series
A multi-part doujin game series released between 2010 and 2012, with a complete edition and related soundtrack and voice drama.
Lionheart (ライオンハート)
A doujin game developed with the KiriKiri engine, released in multiple versions from 2013 onward.
Lionheart 2: Ten Takaku Sobieshi Tō (ライオンハート2 天高くそびえし塔)
Sequel to Lionheart, available in download and package versions.
Sources3 sources
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