Shiba Ryoma, a genius lawyer, passed the bar exam with top marks while attending university and became the youngest partner at a major law firm. He is valued as a legal advisor to many important clients. One day, Shiba meets Haruto, a mysterious genius con artist, at a bar. Haruto invites Shiba, who is looking for a capable co-worker, and tells him, “You can be my partner.”
By purchasing Haruto’s talent to pretend to be someone else, Shiba decides to keep Haruto in his home. He begins his life with his secret partner. Shiba, who is new to the world of romance, is gradually poisoned by Haruto, who is extremely kind and loyal to his “owner” no matter the danger he faces. Two completely opposite people become secret partners and solve problems in an exciting way. Haruto gradually begins to love Shiba’s sensitivity and clumsiness and is drawn to him. As a tsundere with no experience in love, Shiba is frustrated by her inability to express the feelings she gradually develops for Haruto. In the end, they will both face great evil.