Eiji Shirogane coaches Rakuzan High. He's in his 40s and looks it—one of the older coaches in the series, with clean black hair swept back and a preference for sharp black suits, white shirts, and red ties.
He comes across as pretty cold and distant. That said, he clearly trusts his captain Seijuro Akashi to call the shots on the court, stepping back to let him make decisions about what the team needs rather than micromanaging from the sidelines.
Content compiled by AnimeList.moe from publicly available sources.