Mystery number (not the typical chatfic)

What happen when class 1A accidentally made an error while creating a group chat and instead of adding one of them added a complete stranger.

What if Aizawa was part of the group and they didn't realize the error they did not even the underground hero saw it?

What if the person was well known?
The question reminds who is the person is he a villain or a hero or perhaps even someone in the middle a vigilante?!

What if that person needs help and doesn't know how to ask for it?

Will class 1A find out who the person is and will they be able to help the mysterious person?

A/N:
This will not be your usual chatfic. There will be a lot of chapters written as a chat but there will also be others that are not.

This is a mha fanstory and I have no idea where this is gonna go ... hope you enjoy! Please also feel free to correct my bad writing.

Rights on the pictures go to the artist.
I do not own mha, rights to the owner.