I Transmigrated as Yoriichi, Only to Enter Demon Slayer on Hard Mode

Ye Lan: "I transmigrated into Demon Slayer as the strongest character. I'm already invincible, lol."

System: "The manga has limited pages, but life is full of endless details~"

What are the ever-evolving nightmares trying to tell him?

Compared to the eighteen most vicious demons, Muzan is a complete weakling!

The rise and fall of the three factions, the Demon Slayer Corps, the puppeteers, and the onmyoji; the great war between humans and demons that was never recorded;

Where did the mysterious girl in the corner of the village come from, and what kind of past does she carry?

Ye Lan: "This is nothing like the manga! Hey!!!"

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