Ayato Kamisato had always been a busy man. Ever since his childhood, he has always strived to work hard for his family. Being limited by his position and work, Ayato does not have much time or interest in matters of romance. However, when he suddenly caught rumors of "soul marks" and received his, he couldn’t help but chuckle. Then, an opportunity of a lifetime fell right into his hands when he spotted another bearer of his mark. These things are indeed the spice of the young man's life.