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High school freshman Ranko Haruno's sole desire in life is to keep her head down and get by with as little human interaction as possible. It's working well until a random guy is literally hurled into her path (and knocked out when his head hits the wall). The one responsible? A guy she later finds out is her new stepbrother, Kaya Amamine…How exactly is she supposed to live with such a creepy jerk who seemingly has a penchant for violence?! (Source: Yen Press)