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Nezu reserved a strange device that let's people see into other dimensions. While studying the device to make sure it isn't dangerous he has learned a lot about the other worlds, although almost all of the dimensions have one thing in common, they all follow the life of one Izuku Midoriya.

Nezu decides it is time that he gets the hero course and some staff members of UA together to watch these dimensions to hopefully get insight on what might happen in their own world.