Tatsuyoshi Ehara is a Japanese video game designer, director, and producer, primarily known for his work at Sega's Ryu Ga Gotoku Studio. After joining Sega, he rose through the ranks to become a key figure in the development of some of the studio's most celebrated series. His career is inextricably linked to the *Like a Dragon* series (formerly *Yakuza*), for which he directed highly successful and critically acclaimed titles such as *Yakuza 0* and *Yakuza Kiwami*. Subsequently, he took on the role of director for the spin-off series *Judgment* and its sequel, *Lost Judgment*, consolidating his reputation for creating mature narratives, complex characters, and action combat systems. His works have received widespread international acclaim, contributing significantly to the global success of Ryu Ga Gotoku Studio and establishing him as one of the leading talents in the Japanese video game landscape.