Shiba Ryoma, a genius lawyer, cleared the bar exam with the highest score while attending university and became the youngest co-partner at a major law firm. He is valued as a legal advisor to numerous major clients. One day, Shiba meets Haruto, a mysterious genius con artist, at a bar. Haruto invites Shiba, who is looking for a capable work partner, saying, "You can be my partner." Buying Haruto's talent for pretending to be someone else, Shiba decides to keep Haruto in his home. A life together with his secret partner begins. Shiba, who is new to romance, is gradually poisoned by Haruto, who is very sweet and devoted to his "owner" no matter what danger he encounters. Two people who are complete opposites become secret partners and solve troubles in a thrilling 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 his inability to express the feelings he gradually develops for Haruto. Eventually, the two will come face to face with great evil. (Source: smittenkittyyan on Reddit) ~~ Adapted from the novel "Doku Koi: Doku mo Sugireba Koi to Naru" (毒恋～毒もすぎれば恋となる～) by Makino Keisuke (牧野圭祐).