故事发生在桃园高中之内，加贺良介（下野紘 配音）是学校里出了名的好色之徒，对美少女的一切都十分热衷。某日，良介偶遇了名为丽萨菈（远藤绫 配音）的神秘女子，其真实身份竟是出身名门的死神，在阴差阳错之下，良介和丽萨菈签订了契约，他所要付出的代价竟然是他的色欲之魂。大仓美菜（石原夏织 配音）是良介青梅竹马的玩伴，美菜内心里一直喜欢着善良的良介，然而却选择将这份感情深深的埋藏在心底。丽萨菈的妹妹裘儿（西口杏里沙 配音）亦身处人间界，一心想要打败姐姐取而代之的她却最终成为了失败者因此丧失了魔力，于是，裘儿和美菜签订了契约，就此，一段复杂的四人关系拉开了序幕。
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