I: Another universe, seriously!?

Huh? Something...odd...has happened. Really, really odd...It was just a normal day, Rui confessed that he liked Tsukasa, but then suddenly something happened...?

Wait, what!? A different universe..!? Tsukasa has to fix the relationship between him and Rui in every universe! But, wait...Something is off...something in this universe is stopping him from doing so...Why can't he fix it..? Surely the universe is just messed up or something...

ignore how bad this is, I'm trying to improve my writing (this fanfic will have a good ending, trust. I'm not one for writing bad endings as I'd probably cry)