Manaka's math teacher and advisor to the Film Club. Beautiful and a frequent drinker, she is the classic irresponsible adult archetype, tending to spend the prize money of the Film Studies Club on frivolous pursuits like visits to the salon. Despite this, she is quite supportive of the club, being one of the original founding members and the main female protagonist in the club movie that inspired Manaka to push through with his directorial dreams.