Tsumugu Taki, a protagonist of the story, has moved to Nagoya for university. He didn’t feel like working so he decided to go to university without any ambition. However, mysterious cases were waiting for him in his new daily life. With an intelligent yet ironic guy, Sosei Morotomiya and Kotoko Yotsutsuji who Tsumugu met again as if it were destiny, Tsumugu solves the mysteries in his unusual daily life in an easy-going way. He has new encounters and farewells forever in the story. When he runs out of unlimited possibilities, what is left in his hand?