Tatsumi Kazahaya is a character from the multimedia project and anime series Ensemble Stars!. He is a member of the idol unit Akatsuki and serves as its leader. Known for his strict discipline and traditional values, Tatsumi often acts as a mentor and guiding figure for his fellow unit members. He has a calm and collected demeanor, taking responsibility seriously, and is admired for his unwavering dedication to his craft and his unit's success.