Fics like Heroes of Aionios

During the Kamino Raid, a few students had gone to rescue their kidnapped classmate. Things quickly took a turn for the worse, as they were caught by the villains. After instructing their friends to get out of there, Izuku stayed behind to buy them time to escape as he fought Shigaraki, the leader of the league. Yaoyorozu Momo had also stayed behind once she saw who Izuku was fighting. The fight was going about as smoothly as they could hope for, when a portal opened up and swallowed Izuku and Momo. Now they were in a strange world being torn apart by war. But even in another world, they were determined to be heroes and set out with a group called Ouroboros to save that dying world before it was too late.

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