A teacher with a strange affinity for military tactics, Sensei is the advisor for SCHALE. With the help of Arona and the students of various academies, Sensei keeps the peace in Kivotos while getting into wacky antics with the city's students, guiding them to be better while getting closer to them. In-game, Sensei is the player's self-insert character, allowing the player to imagine their sex or any appearance they want for themselves.