This_bigmess
This story will also be available to read on fanfiction.com or archiveofourown.org as well
Izuku Midoriya and Eri after defeating Overhaul/Kai Chisaki are suddenly summoned to the world of Re:zero. Together they walk around the capital of Lugunica in search of answers and stumble upon a silver-haired half-elf and so their story begins.
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The story takes place basically at the end of the overhaul arc or season 4 of MHA (right after Aizawa uses his quirk on Eri to stop her from reverting Midoriya to oblivion).
The reason is that I want Eri to be involved in Midoriya's adventure as a sort of emotional support character. Besides that, Midoriya will have to try to take care of Eri while he advances through the story and protect his friends at the same time.
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I also didn't want Midoriya to be too strong. Otherwise, the story might get a bit boring, so I thought let's use season 4 Deku.
He can use up to 20% of OFA if he really pushes himself. I'm not too sure, but I think he was capable of using 10% comfortably without any strain, so he'll be using 10% most of the time.
Well that's pretty much all I wanted to say before you read unless you didn't and skipped this but oh well whatever. That and this story will take after the anime version of Re:zero rather than the light or web novels, so the story will likely stop at season 3 unless I read the web novels just a heads up