Quiet and introverted, Kakeru keeps to himself—especially as he has a dark secret. Spending each afternoon in the girls bathroom masturbating, he loves being able to picture doing perverted things with females who wouldn't normally look at him twice. Kurosawa spends time at the school library every day, reading. He reads many books. He is also camera-shy and does not socialize with others, preferring to be a loner.

With much to learn about life, Kakeru finds that friendship and romance are much more important than painting the inside of a toilet stall.