Yuki Yuna is a Hero: The Washio Sumi Chapter

The hero team, Sumi Washio, Sonoko Nogi, and Gin Minowa, hasn't been able to unify because they haven't had much time to prepare. So, they decided to choose a leader and strengthen their unity by doing a training camp. Sumi saw herself as the leader, but the teacher, Ms. Aki appointed Sonoko as the leader... (Source: Amazon)