Bikers and assassins, a combination destined to engage in conflict. The two organizations, The Port Bikers, and The Port Assassins', stare at each other without knowing the faces of their most dangerous. The Gravity Assassin, and The Demon of the Port, two young men. With the assassin, Chuuya Nakahara, out to kill The Demon, Osamu Dazai. An organized meeting through chance without their titles and on separate priorities. Neither knows of the bloody titles the other wields, and yet, sparks ignite. How will Chuuya take the life of his target after falling so hard? This world, plagued by death... Can they survive together? Or will they fall to the dark and lose one another to their opposing professions?

❝I want you to kill me. All of these stories told by Oda, I've become obsessed with the idea of being freed from this life by a grim reaper. Although I imagined you'd look a little sexier in that costume." "It's not a costume! It's a uniform!" Chuuya was aghast. "Either way it'd look better on the floor.❞ ••• where chuuya is a grim reaper, set to reap dazai's soul.

This is a list piled up by the mafia on what Chuuya should not do.