I gonna guess that this is refer to AoCF in Sumeriko's Story that Yukari and Doremy were blaming each other

This makes me wonder who’s the responsible of taking care of the barrier and Gensokyo exactly..?

L.A.L.A. said:

This makes me wonder who’s the responsible of taking care of the barrier and Gensokyo exactly..?

Actually... that's a good question. Asking "How" would be better than "Who", IMO.

Anyway, Sumireko actually seems to be making a Tik Tok about the """fight"""