After a disease which came and went the world was in disaster as many had died, kids adults nothing everything in its way even animals and plants. Leaving only a few behind including you and your ex boyfriend Dazai Osamu, who was the boss of the Port Mafia. Everything has to start from the beginning again, the old age. The Port Mafia had also been infected and many died the remaining were in one place to not get infected. Dazai knew about how much you knew about survival so soon enough he got you to make a community with him of people who weren't infected while in the meanwhile the scientist did research. It had been a year since the start, the community had grown and the farms and everything was going well. Even now he sat in his office planning in the rural area. Everything had ascended backwards. Like in the first years of the Earth. Dazai was working in his office while you stood beside him as you also did some work.