Shiba Ryoma passed the bar exam with the highest score while at Tokyo University and became a co-owner of Oracle Law Firm, one of the largest in Japan, by age 27. Nicknamed the ruthless and merciless ice pope for continually firing his partners, his smooth life is disrupted after he accidentally injures a mysterious young man named Haruto at a bar. Staring into Harutos clear eyes, Ryoma feels an unfamiliar sensation that unsettles his normally controlled mind.

Seeking to clear his head, Ryoma goes on a solo camping trip. To his shock, Haruto appears there as well, cryptically stating that they will surely meet again before disappearing. That very night, Haruto rolls into Ryomas tent. Amazed by Harutos ability to impersonate anyone, a talent that marks the young man as a genius con artist, Ryoma invites him to stay at his home. He proposes they become partners to solve various troubles, marking the beginning of a suspenseful relationship where Ryoma slowly gets poisoned by Harutos devotion and gradually falls in love with him.

The story unfolds as the elite lawyer and the mysterious con artist navigate a series of dangerous situations. The narrative arcs focus on how each case they solve together deepens their toxic bond, exploring the blurred lines between professional necessity and personal obsession. The series carries the tagline Doku mo Sugireba Koi to Naru, which translates to Even poison, if it goes too far, becomes love.