This book is also called "Soman: The Demon King Who Started the Naruto World"

[No system + multiple worlds + no qualifications to become Kamen Rider + multiple heroines + Demon King + OOC apology]

My name is Tokiwa Sougo, but I am not the little devil king, nor the old devil king. I am Tokiwa Sougo who traveled to the world of Naruto. I had no inheritance and felt that my life was over. But when I was just five years old, my complaints were heard by the old devil king, and I got an unexpected inheritance.

Tokiwa Sougo: I'm not a knight, I'm a demon king.

Welcome to the Hell Game.

[Enter Dungeon: Bloody Restaurant]

[You're applying for the position: Delivery Driver]

[Your clients include: a fat otaku stinking of corpses, a maid who explodes at the slightest disagreement...]

[Your colleagues include: a boss who's too pretty to be human, a literal beast of burden, a man-eating tree spouting French swear words...]

Faced with these crouching dragons and phoenix chicks, Liu Zheng, who wanted to be a good person, had no choice but to stop being one.

Ordinary people practice diligently and become cannon fodder. Geniuses learn from the sages and stop at the limit. Peerless people learn from the world and create their own way. Monsters feed on all things and stand alone on the top of the mountain overlooking all living things. Jinguji: Flesh and blood are weak, I don’t want to be a human anymore. Extraordinary physique, secret skills, magical methods are all plug-ins, they will explode when you kill monsters, load the plug-in, and ascend. The first world is Yijiquan (one beats a thousand gold, muscle girl, fist wish)