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My younger sister, Ai, was working very hard on her club activities until late every day in preparation for the upcoming prefectural tournament. Well, now that I've grown up, I don't face it, but yes. As an older brother, I've been doing things like loving my little sister since a long time ago. Such a cute little sister has been persuaded by Mizuguchi, the super-slutty bastard in my class, since around the summer of this year. It was gone...