When Dazai, in a fit of rage, wished for Chuuya’s death, he did not know how seriously his former partner would take his words. Neither did he anticipate the birthday gift Nakahara decided to give him three days later. Only if he had known... "I would’ve have rather torn out my tongue!" How can you still live, knowing it was your words that killed your dearest? Is it possible to go back in time to rectify your irreparable mistake?