Reincarnated as a Spider: The Hero Who Conquered the Demon God's World

After conquering the Demon Lord's world in a single run, Seiya Ryuuguuin accidentally wanders into the world of So I'm a Spider, So What? and loses all his former abilities.

After somehow turning into a tiny spider in a monster's lair, Seiya decides to stay hidden until he can clear the place without taking a single hit.

Then a little spider named Shiro appears, performing her one-woman comedy routine.

Attacked by a blue-skinned frog monster?

Scared off by a human hero?

Threatened by the Earth Dragon King?

Seiya Ryuuguuin promptly conquers three more floors of the Elroe Great Labyrinth!

"People in later generations always say I'm a big eater, or a one-spider comedy act... But that's only because you never met Seiya Ryuuguuin..." From Shiro's diary after becoming a Demon God.

P.S. Seiya Ryuuguuin is the overcautious protagonist of the anime The Hero Is Overpowered but Overly Cautious.

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