Kokuryuu Matsuoka

Once a close professional associate of Narihisago Akihito, this former colleague shares a deep-rooted history with the protagonist. Driven by his past experiences working alongside Akihito, his character is defined by the complex bond formed during their shared time in the workforce. As a key figure tied to Akihito's professional journey, his presence introduces significant narrative depth and connection to the established lore of the series.