*after your bath*
Chara: *phone dings* cewl, just got a invite to a mult-demensional party! y'all wanna come? maybe you could meet some other half-merfolk Kat! heard theres a lot of romantic places to.........
Chara: guys you shoudl totally come!!! i heard that Will made somethin special for you guys there.......cant wait to see what it is!!!
*y'all dun fall through a portal, and all of you dp into different entrances, all far away from each other*
KAT
*you fall into a tropical reef, with all sorts of tropical fish and plants*
KACCHAN
*you enter somewhere that looks a lot like UAs entrance, with genderswapped Deku and Todo*