I Crashed into Another World and Went on a Killing Spree!

After turning eighteen, Luo Ze, from a version of Earth in another dimension, begins having a strange dream. In it, he forms an unknown bond with a bizarre demonic armor.

After who knows how much time has passed, just as Luo Ze is about to forget all about it, an unwelcome visitor arrives on Earth: a demon beast from his dreams.

The monster rampages through the city it has come to, destroying everything in its path. At the critical moment, Luo Ze is enveloped by a black-and-red light, and then he transforms...

"My name is... Demon Armor Naide!"

And so begins anew, in his own words, a story spanning several million years.