Yn was bullied by union students and the teachers didn't help so he was expelled by union as union celebrated as for Yn after leaving union he fell in a wormhole and was sent to one of these worlds that uses duel monsters to fight people as union was transported to a theater as they react to Yn in one of the yugioh worlds

So Yn can only be in one yugioh world

1 yugioh battle city world
(Yn dragon and magician deck)
Ship Yn x mai

2 yugioh gx world
( wild force deck
Based off the power rangers wild zords )
Ship Yn x Alexis

3 yugioh 5ds world
( warrior deck)
Ship Yn x akiza

4 yugioh zexal world
( street fighter deck)
Ship Yn x Rio

5 yugioh arc world
(Utopia deck)
Ship Yn x Tyler sisters

6 yugioh vrains
( symbiotic deck)
Ship Yn x blue angel

Only one of these worlds just ONE!!!