Ah, I don't mean to break the zone, but shouldn't Dazai's first reaction be to call an ambulance upon finding Atsushi in that state? He just seems to shrug it off like, "Oh, he's just sleeping."

Aww...Dazai did a good job comforting him and taking care of him. He is a good guy. Great job!

N’aaaw. Parental/older bro Dazai is great.
Kudos. God bless.
-Silver

Well, here is my opinion : it's good and you should post the next chapter soon? :D
I hope you will because i'm dying to understand what's happening.
Anyway, it is well written and deserves an ending. Keep writing please!