Yasuke

Three siblings who move into their ancestral estate after their father's gruesome murder discover their new home's magical keys, which must be used in their stand against an evil creature who wants the keys and their powers.

A mysterious switch appeared one day. Upon pressing it, they were sent to a different alternative world!! There are also characters from other alternative worlds gathered together...!?

Before eradicating humankind from the world, the gods give them one last chance to prove themselves worthy of survival. Let the Ragnarok battles begin.