The student council president. At the start of the story his grades are just a bit better then Nana's but she starts to over take him after finding a way to relieve stress. He is in love with Nana but has yet to tell her and she appears to be unaware of the fact. He does not even consider Kaoru an obstacle to Nana, despite them being childhood friends, until his sister tells him there is something going on between them (for a price). It also doesn't help his chances that Nana's best friend has a massive crush on him.