Makoto Kohsaka is one of the founding members of the Genshiken club at Shiiou University, having joined at the same time as Kanji Sasahara. He is a hardcore otaku whose primary passions are video games, especially fighting games and adult simulation games (eroge), in which he is nearly unbeatable. Despite his deep immersion in otaku culture, Kohsaka defies the typical stereotype: he is unusually handsome, dresses fashionably, and carries himself with a sociable, outgoing demeanor. He is perpetually easygoing and almost never loses his temper, maintaining a constant smile, yet he can be surprisingly firm when he needs to hold others to their commitments, particularly his girlfriend Saki Kasukabe. Kohsaka is genuinely happy and open about his hobbies, and he serves as a welcoming presence for newcomers to the club. His role in the story is multifaceted: he is the group's video game specialist, a key friend who helps Sasahara accept his own otaku identity, and the anchor of a central romantic relationship with Saki, a non-otaku who initially struggles with his lifestyle. Over the course of the series, his relationship with Saki matures as she learns to be more patient and accepting, while Kohsaka himself remains largely consistent in his cheerful nature. After graduation, he secures a job programming for an adult game company, which challenges his ability to balance work with his otaku interests. Kohsaka also possesses a penchant for cross‑dressing during cosplay events, which he does with good humor. Notable abilities include his exceptional skill at fighting games, which is portrayed as almost unmatched, and his talent for seamlessly blending his otaku hobbies with a mainstream social life.