Izuku has weird luck. Wait! You don't believe Me? Then how will you explain this? Izuku Midoriya a boy once regarded as the hero and savior of Japan. Got reincarnated, was sold to the demon by his scum parents, became a demon's grandson, and now has to attend a demon school with Nana in his head and the power of One for All in his hands.

(Spin-off of Welcome to Demon School, Izuku-kun!)(crossposted on A03)(co-authored by Hazard Overflow) Iruma Suzuki, a boy just doing his job to survive in a difficult world, meets a hero, and suddenly his life is much more dangerous and happy at the same time. SIX NEW CHAPTERS TODAY!

Izuku and Inko get adopted by Sullivan, and cause the Demon World untold levels of potential change. Act 2-Survival of the Fittest (Co-authored by Hazard Overflow, cross-posted on A03)(five chapter update!)

Iruma was just a down to luck boy who was always explored by his neglectful and dumb parents. It ended up with them selling him to an old rich man called Sullivan, who always a grandson. However, Iruma is quirkless and doesn't has any combat ability or an idea on how to become a hero. However, with Sullivan and his friends, Iruma would become someone that the hero world will needs.

After getting used to his life in the Demon World, one spell (or two, or a catastrophe) gone wrong leads Iruma to return to the Human World, but does that kid have engine legs? These clearly aren't the humans Iruma is used to, and he is one! Will Iruma ever have a normal life? Probably not, so Welcome to Hero School Iruma-Kun!