Tsuki no Sango - Vol. 1 Ch. 2 - Chapter 1 (2)

[MangaDex]

 

[MIDASFRANK]

So my observation is that the story happen in a dystopian future...
But other than that there is the arishas descendant kind of referance and nothing else to tie it to mainline story
And DAYUM THE ART IS PEAKING HERE