"妖灵"，最初只是出现在小范围的灵异事件中，有无害的善灵，也有危险的恶灵。一百年前，恶灵突然大量增长，肆意屠杀人类。人类数量锐减，挣扎求生，直到拥有妖气潜力，能够操纵"妖灵"对抗恶灵之人——御灵师们出现。在收容所长大的少年林风和他的妖灵童童一起，在这波诡云谲的时代将何去何从，未来又有怎样的机遇和危险等着他们呢?
普通男子高中生加贺谷修一可以变身为怪物但并不是普通的怪物，而是布偶怪物，而且还是少女进入他的身体控制。这样过着日常生活的他，所热爱的日常，某天开始却突然不复存在……
In the year 1524, the former Assassin Ezio Auditore retired to a villa in the countryside of Tuscany, with his wife Sofia and children Marcello and Flavia. While Ezio wrote in his study, Sofia asked him to watch Flavia while she and Marcello visit his sister Claudia. Shortly after, he left his study to tend their vineyards while Flavia played nearby the villa. In the midst of his harvest, he saw a stranger cloaked in black, talking to Flavia. Fearing the worst, Ezio hurriedly intercepted the stranger, though Flavia told him that she was no danger, as Ezio saw her necklace with the Assassin insignia...
偶然相遇、完全不是同一类型的朱里与由奈，以及朱里没有血缘关系的弟弟理央、由奈的青梅竹马和臣，是住在同一所公寓、就读同一所学校的高中一年级生。由奈憧憬着理央，理央对朱里怀抱无法说出口的心意，朱里隐藏着秘密，和臣目击了某个秘密。 他们各自的心意复杂地纠结在一起，越是思念对方，就越是和对方错过—— 痛切的恋情，开始启动。
