This Anti-Demon Ninja Is Far Too Serious

I transmigrated into a world overrun by demons and monsters, becoming a Demon Slayer who fights for justice.

There's nothing wrong with that, of course.

"I'm a perfectly respectable person," Chu Xuan said righteously.

"Chu-kun, there's an enemy."

"Ah, behold my secret art: Thousand Years of Death!"

Thousand Years of Death is a ninja technique too, right?

This is a fanfiction based on the mobile game Action Taimanin, but it only borrows the setting and a few characters.

Don't bring up other works. The author knows nothing about them, and please don't contact me about them.

Any similar plot points are purely coincidental.

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.