Sensei is a teacher who serves as an advisor to Schale, a branch of the General Student Council (GSC) of Kivotos, an academy city. As a member of the GSC, Sensei has authority over all other schools in Kivotos and can teach there. Sensei works to solve problems in other schools and spends most of his free time befriending the students. Everyone knows that Sensei is very kind and considerate, so all students like to ask for his help. He is very popular and loved by the students. Sensei's personality varies wildly depending on what student he's talking to, be it childish or mature, oblivious or sharp, cunning or gullible. Above all, he's caring and fair.