On a misty night, Oda Sakunosuke, Dazai Osamu, and Sakaguchi Ango meet as always at their usual bar. For the trio of Port Mafia members, it a night spent in camaraderie like any other, but Ango vanishes that very night. Oda is given a direct order from the Port Mafia boss to find Ango, but...
It is a singular event in one's 
life that none may reverse.
.وهو حدثٌ فريدٌ في حياة المرء ولا أحد يمكنه عكسه
Ein einziger Tod,
der sich nicht umkehren lässt.
Es un evento de la vida
que no se puede revertir.
Es un evento de la vida
que no se puede revertir.
Elle est immuable et définitive…
È un momento unico nella vita
delle persone, che nessuno può invertire.
É o evento singular e 
irreversível na vida do indivíduo.
Единственное необратимое событие.