She used to say, 'When I grow up, I'll marry you, big brother!' She was such a cute little sister... But lately, Kotone has been avoiding me. Well, I guess she's just playing hard to get. There's no way Kotone could hate me. She seems to be in a good mood talking to someone on the phone... Could it be that she has a boyfriend already!? Before my beloved little sister ends up with some random guy, big brother will be her first. Let's graduate from being virgins together.
