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Japanese video game developer

Last updated September 2, 2026

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Overview

f4samurai is a Japanese company that plans, develops, and operates mobile online games and social apps/web services. It was founded in 2010 by Kim Cheol-seok, who currently serves as CEO, along with Taguchi Katashi (COO) and Matsuno Hiroki (CHRO). The company's name derives from the samurai spirit and four core values: fun, future, family, and farm.

History

f4samurai was established in 2010 by Kim Cheol-seok (current CEO), Taguchi Katashi (current COO), and Matsuno Hiroki (current CHRO), who were former colleagues at a major SIer. They started developing social apps and web services in a small apartment room. The company received investment from Samurai Incubate and a capital/business alliance with Sega Games. In 2020, it became independent from the Sega Sammy Group by buying back some of Sega's shares. In 2021, it entered a capital alliance with Aniplex. The company has released several mobile games, including 'Magia Record' and 'Code Geass: Lost Stories'.

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