Reina Kojima

An upperclassman to the main characters (it is jokingly noted that she was a third year in the main characters' first year and is still a third year when they move up a grade, implying some sort of strange manga time, as she is adamant that she isn't repeating) . Reina is romantically interested in Naota, who seems to reciprocate. She always has a small tiger named "Rawr" on her shoulder.