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.

Sensei's personality varies wildly. They can be childish or mature, oblivious or sharp, cunning or gullible. In general, they seem to change their attitude to fit the students.