Mafuyu's 16 and would be in his grade, so they could be classmates! She desperately needs tutoring but she also has like three people unsuccessfully trying to help her with that and would only be a headache for Bruno haha, but she's good at forcing friendships onto anybody and everybody and would be someone who would drag him into cafes or wherever he looks interested in without giving anything proper thought, if he needs a pushy friend :P