Keito Hasumi is a main character in the multimedia franchise Ensemble Stars!. He is a third-year student at Yumenosaki Academy and a member of the idol unit Akatsuki. Known for his strict, disciplined, and traditional demeanor, Keito often acts as a reliable adviser and mediator among the students. He is respected for his intelligence, strong sense of responsibility, and commitment to order. His role in the series includes acting as Akatsuki's leader and providing guidance to his peers.