Media Cross Co., Ltd.

Media Cross Co., Ltd. (メディアクロス株式会社) is a Japanese web production company headquartered in Fukuoka City, Fukuoka Prefecture. It provides website design and development, SEO (search engine optimization), and newer AI-search optimization services marketed under the terms AIO, LLMO, and GEO. The company positions itself as a full-service web partner for businesses, clinics, public bodies, and other organizations, handling everything from corporate site creation to ongoing maintenance and search visibility. According to its official website, the company's core competence is described as "basics, fundamentals, and underlying strength" (基礎・基本・地力) — a focus on standards-compliant, high-quality internal site structure that supports long-term search performance. The company states that it has handled more than 800 projects over roughly 18 years since founding, spanning website production, maintenance, and various optimization measures. Its service menu includes corporate sites, hospital and clinic sites, real estate, manufacturing, beauty and health, retail, e-commerce, schools, and product/service introduction pages. Media Cross is led by representative director Kei Shiki (式 啓), who describes a personal background in programming and information systems and a motivation to provide high-quality websites at fair prices. The company markets itself as a "neighborhood family doctor" for the web industry, aiming to support clients' businesses with ongoing, results-oriented service rather than one-off site builds. In recent years the company has emphasized AI-search optimization, promoting AIO (AI Optimization), LLMO (Large Language Model Optimization), and GEO (Generative Engine Optimization) as standard features of its website production, alongside traditional SEO. It also runs periodic campaigns, such as discounts on website production fees tied to AIO implementation, and publishes SEO-focused blog content and client case studies. The company is based in Fukuoka and serves clients primarily in Kyushu and nationwide.

Media Cross Co., Ltd. is a Japanese web production company based in Fukuoka City, Fukuoka Prefecture. Public information about its early history is limited, but its official website provides a founder's account and a description of its development. The company was founded by Kei Shiki, who serves as representative director. In his greeting on the company website, Shiki describes having been interested in computers and programming from elementary school, writing programs in junior high school, and studying information systems at university. He notes that during his university years the internet began spreading in Japan, and he immersed himself in web-related research, including Flash animation production and standards-compliant website development. After working at a general company in sales while also taking on system development and website production contracts, he left to travel around Japan by car. During that period he decided to enter the web industry, motivated in part by having seen many low-quality website production companies and wanting to provide high-quality websites at fair prices. The company states that it has handled more than 800 projects over roughly 18 years since its founding, covering website production, maintenance, and various optimization measures. Its core competence is described as "basics, fundamentals, and underlying strength" (基礎・基本・地力), with an emphasis on standards-compliant internal site structure that supports search engine performance. The company says it has consistently trained professional creators in-house and has not relied on superficial SEO tricks, instead focusing on internal structure and performance. Over time, Media Cross expanded its service menu to cover corporate sites, medical and clinic sites, osteopathic and acupuncture clinics, professional services such as tax accountants and lawyers, real estate, manufacturing and construction, beauty and health, barber and beauty salons, retail and food businesses, e-commerce, schools and educational institutions, and product/service introduction pages. It also offers CMS implementation, responsive design, smartphone support, SNS integration, portal and search systems, and video production. In the mid-2020s, the company began emphasizing AI-search optimization, promoting AIO (AI Optimization), LLMO (Large Language Model Optimization), and GEO (Generative Engine Optimization) as standard features of its website production. It announced standard implementation of AIO measures and ran campaigns offering discounts on website production fees tied to AIO implementation. The company also publishes SEO-focused blog content, including explanations of AIO and its differences from LLMO, GEO, and AEO, as well as case studies of search ranking results for clients in fields such as orthopedics, psychiatry, and dental implants. The company is headquartered in Fukuoka and serves clients primarily in Kyushu and nationwide, with case studies listed for clients in Fukuoka, Saga, Nagasaki, Okayama, Tokyo, Aichi, and other regions.

• Company founded by Kei Shiki in Fukuoka, Japan

• Reached more than 800 projects over roughly 18 years since founding (as stated on official website)

• Website renewal project for Ropt Co., Ltd. (Fukuoka sign production company) published

• Announced standard implementation of AIO (LLMO/GEO) measures

• Launched AIO standard-equipped campaign with up to ¥300,000 off website production

A Fukuoka-based web production company positioning itself as a long-term, results-oriented web partner — a "neighborhood family doctor" for the web industry — emphasizing standards-compliant internal site structure, fair pricing, and AI-era search optimization.

• Premium Plan

  High-end website production plan with director involvement and top-level design quality

• Basic Plan

  Standard website production plan

• Simple Plan

  Entry-level website production plan

• Light Plan

  Low-cost website production plan

• Landing Page

  Single-page conversion-focused website production

• AIO (LLMO/GEO) measures

  AI search optimization services for generative engines and large language models

• Internal SEO measures

  On-page and structural SEO optimization

• CMS implementation

  Content management system setup for client-side updates

• Clinic Pack

  Website production package tailored to medical clinics

• Osteopathic Clinic Pack

  Website production package tailored to osteopathic and acupuncture clinics

1. 1福岡ホームページ制作・SEO対策・AI検索対策（AIO・LLMO・GEO）のメディアクロス株式会社medi-cro.jp
2. 2会社概要 | 福岡ホームページ制作・SEO対策・AI検索対策（AIO・LLMO・GEO）のメディアクロス株式会社medi-cro.jp
3. 3企業サイト | 福岡ホームページ制作・SEO対策・AI検索対策（AIO・LLMO・GEO）のメディアクロス株式会社medi-cro.jp
4. 4株式会社ロプト様 ホームページ制作実績 | 福岡ホームページ制作・SEO対策・AI検索対策（AIO・LLMO・GEO）のメディアクロス株式会社medi-cro.jp
5. 5Media Cross Co., Ltd. (Japan) - Wikidatawikidata.org