AeunHyunri
It's had been 2 years after Baji's death but Chifuyu still can't move on. On his weekly visit to Baji's grave, there's an unknown man being there too, sleeping under a tree near to one grave. Chifuyu went there to ensure whether that man still alive or not. Ended up he had such a deep conversation with that guy named Dazai Osamu.
"Yeah, it's hurt. Reminding their last smile before they closing their eyes, I really hate it." Dazai carved one of his longing smile.
P/s: I'm also post this story on AO3 under account Kurobane_Miraii06