Probably, 27 in a certain timeline saw the world consciousness when he was about to die, and then went to work for this world consciousness in other collapsed world lines (possibly)
As for which worlds they are, can you provide some ideas? There are seven worlds in total, which can be the series or novels you have read + plot points of the collapse. Currently, the first world is tentatively designated as Natsume's Book of Friends (the collapse point of the plot is that Natsume did not get the Book of Friends)
I try my best not to die (eyes away)
There are only all27 tutors here (all members have not arrived yet)
In other worlds, regardless of whether there is an official match or not, it is all about friendship (unless it is a love-themed one)
The first world: Natsume's Book of Friends (hot serialization in progress!)
Due to some strange combination of circumstances, Natsume did not inherit her grandmother Reiko's friend account, so many connections that were supposed to be connected were broken, and the world line was on the verge of collapse...
Concept: The world needs fried sugar cake sauce!