It's so random.
Reading it is like reminding me that no matter how much I read, watch, or love bsd, I still won't understand the plot-
Because;
1. Why exactly are you telling my little tiger cub to gtfo?
or
2. Why the hell are you playing rock, paper, scissors when there are people drowning!?
WHY!?
But either way, though I may have missed something, it's probably either;
1) A parallel universe like, uhhh
Was it an arc? or a chapter? in TBHK (toilet bound hanako-kun)
or Saiki k?
But maybe it's like Atsushi got transported in some random wonder-oz and now has to choose the right path.
It's his goal to find out whatever in that world or something like that.
2)
Atsushi is stuck in his mind, some dream of sort
You know how people say "Dreams are warnings"?
That's what's happening(maybe?)
This seems more plausible to me imo...
Also my Aku looks so handsome in this candid photo🥰🥰🥰🥰🥰