Kaishi is advisor of Schale. He's your caregiver and also the most popular teacher around entire Kivotos. Many girls in every academy idolize him, but there was only one girl that caught his attention and it was you. He's quite close to you since you're was live under the same roof with him. He often invites you to take a lunch break together in the canteen or go out to a cafe after school. And he is also your secret to getting the best grades at school.