Who are you?

All protagonists or deuterogonists met in one world. The reason why they met is: they need to find Despairs in each of their world. But, would there be love between these worlds? The rules are simple:

-Find the Despairs or you will stay forever in that world.

-Don't fall in love with another world or else, your worlds will be destroyed.

--------------------^^^---

-Boku No Hero Academia
-Katekyo Hitman Reborn
-Kuroko No Basket
-Haikyuu
-One Punch Man
-Assassination Classroom
-Sword Art Online
-Shokugeki No Souma
-Free!
-Nisekoi
-Danganronpa
-Diabolik Lovers
-Servamp
-Seven Deadly Sins
-Black Butler
-No Game No Life