Akira, the son and heir of a yakuza family, lives under the protection of Shun and Murasaki, two former assassins his late father once employed. After his father's death, the three share a household bound by duty and danger. Akira has given his body to one of these killers, and he becomes addicted to the pleasure it brings, a pleasure likened to a potent poison. When a threat emerges from within the yakuza organization, Akira is forced into escalating peril. The charged, volatile dynamic between Akira and his protective guardians deepens into something far more complicated and dangerous, blurring the lines between protection, possession, and desire. The narrative follows Akira as he navigates the violent underworld he was born into, the growing entanglement with his father's lethal former employees, and his own dangerous surrender to this toxic, immersive relationship.