Now a first-year university student, Satomi Oka has left behind the hobbies and worries of his early teens, entering a new, defining phase of his life. He works the graveyard shift at a family restaurant, attends classes with friends, and maintains contact with his troublesome yakuza acquaintance, Kyouji Narita. Yet this friendship with Kyouji remains uncertain and ill-defined; Satomi oscillates between wanting to decisively end their relationship and hoping Kyouji will abandon the criminal life at his request. As it turns out that Satomi's regular customer—a bald, seemingly penniless manga artist with a taste for wine and a passion for cats—has ties to Kyouji, troubles beyond Satomi's reach begin to unravel in the yakuza world. Caught between his ordinary life and the chaos Kyouji brings simply by being part of it, Satomi wrestles with inner turmoil: why he so fiercely disapproves of everything Kyouji does, and why, despite that, he lacks the resolve to let go.