It's probably about the meeting of Naru Sakura, Zuo Naru, and Zuo Sakura's children.
(The three backgrounds are in different worlds, there is no original world)
A look at the chaotic relationships in Team 7←
It's definitely a short story for now, but if the story is interesting enough that many people want to read the follow-up, it will be changed to a longer story.
Concept: Three parents who hang out together