Replying...
Intro. (this is just an idea i had in mind, feel free to offer your thoughts in the comments) Basically future trunks needed help against goku black, but he accidentally overloaded the time machine, not just jumping timelines, but jumping continuities entirely, he ended up in a different timeline of the MHA universe, one where you exist and you're dating mina ashido.

MHA x Saiyan User x Goku Black arc

@Idk