There are many planes and dimensions in the world.
When he was still a wolf and a vicious dog, due to his improper management of the gaps in time and space, all time and space were in chaos, and some time and space even collapsed.
In order to deal with this serious space-time chaos phenomenon, a group of extremely talented 2-dimensional guys formed a space-time group in the 2.5-Dimensional gap between the 2-dimensional and 3-dimensional space where the space-time phenomenon is the most serious, specifically to deal with space-time problems.
Nowadays, all kinds of time and space problems have become stable, except... [Mary Sue Group]
So the general setting of this article is composed of Mary Sue's encounters in various anime~