Anime Crossover: I Am the Strongest Hero!

Takamine Kiu transmigrates to the world of One-Punch Man. As someone from another world, he has a little sister and a house, but there's no way anyone could feel at ease in this world!

He has to train hard, but the results never seem to improve. Then, one day, he witnesses a hero fighting a monster for the first time...

Why are Kuuga and the Gurongi here!

After rescuing Kaoru Ichijo from a burning building, he finally awakens the System and discovers that performing heroic deeds earns rewards, including cards that let him take on the roles of various heroes!

"A rift between worlds has opened, and an invasion from another world is imminent. The first wave of invaders will destroy the world in five hours. Host, please role-play as a character and defeat the invading monsters."

He thought the future would be safe, but the Strongest Hero System gave Takamine Kiu a rude awakening, making him realize that danger still lurked everywhere.

However, after checking the Hero Association's S-Class roster when he got home, Takamine Kiu suddenly felt that maybe this world wasn't all that dangerous after all...

The third-ranked S-Class hero is Kusuo Saiki, the thirteenth-ranked S-Class hero is Mikoto Misaka, and the fourteenth-ranked S-Class hero is Thor, among others.

This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.