Milton Massen

Milton Massen is the nerd in Karin's class. He has dark hair and wears a pair of eyeglass just like Masami, only that this one is the thick, round type usually worn by nerds. He has been in Karin's class since the beginning, but his existence is not clearly marked until three days before the annual showing of the school's movie club, but he can be seen briefly at earlier times.

First he engaged in movie making, then astronomy. When he caught a glimpse of Buuringo-sei, he turned to the investigation of Buurin's true identity, a quest which brought Karin a great deal of problems.

Jimmy has sort of fallen in love with Kaoru after a cherry viewing trip. A cherry tree seen in that trip, which blossoms late, cured his "sakura-phobia" caused by his miserable failure in an abacus exam in his earlier years.