Link-U Group Inc. (4446.T) engages in the server platform business primarily in Japan, providing application planning, development, and operation services for digital content distribution. The company offers platforms supporting online mangas through MANGA Plus, Comikey, Manga UP!, Gangan ONLINE, Comic FUZ, Sunday Webry, Zebrack, Manga Gaugau, Manga Park, Manga Mee, and MangaONE; QR code-reading applications through ICONIT; integrated platforms for creators via Xfolio; video-based business media services through PIVOT; English-learning tools via Pocket Gogaku; and earthquake preparedness services through Yureshiru. It operates in the technology sector, focusing on software applications for e-books, video distribution, and related digital services, targeting publishers, creators, and end-users in the Japanese market. Founded in 2013 and headquartered in Tokyo's Sumitomo Real Estate Ochanomizu Building, the company changed its name from Link-U Inc. to Link-U Group Inc. in February 2024 to reflect its expanded group structure, including subsidiaries like Link-U Technologies.