2(BNHA)

An Au where everyone is born not seeing the color that matches their soulmates' eye color which they can only start to see after they first hold eye contact or touch(at least in case of those whose head...isn't human and we all wonder where are their eyes, mouth, etc like the lego head man, the one whose head is a speech bubble, etc).

Imagine everyone from Class 1-A(if Mineta is included is up to the writer but I do wish there were more fics with him) being born unable to see up to five or more colors which confuses them until a few of them meet one of their soulmates(BakuDeku, KiriMina and others that met before the UA exam) and conclude that they are one of the exceptions were they have more than one soulmate.

Of course that they assumed they have like five soulmates and not like 20 but once they all meet each other, they decide to just roll with it and get to know each other so they can see where they will end up as not all soulmates end up romantically involved.

Anything else would be up to the writer like if they all end up together, how much it affects fights(it would be for the best if Bakugou didn't bully Deku unless you have them fake it to keep other bullies away from Deku or something like that), other people's reaction to the whole class being soulmates, etc.