Demon Boss in the Human World - Chapter 12

One day I was suddenly thrown into a fantasy world with my sister,bff,fav. actress,milf next door, fav. pornstar,etc...There I also met several mystical women from different species like mermaid,elf, Demonic, warrior, village girl,etc...But who was the mysterious motherly woman who brought me here?What was her motives?All I remember is that few days ago I....

Travel through Naruto and become the son of an ordinary civilian Chunin.

In this life-like world,

He obtained the golden finger to speed up the practice of ninjutsu,

Let ninjutsu itself produce a magical change from decay.

The knife cuts the jade, and the water bomb breaks Suzuo.

- Description from novelbuddy

One day, I woke up only find out that I’d become a Demon Lord, an individual responsible for protecting a dungeon. The world I’d been spirited away to was one filled with violence. Gigantic monsters wandered through it and competed with each other each and every day for the right to survive. I had no choice but to strengthen my dungeon’s defenses in hopes of living another day—or at least that was what I’d thought. For some odd reason, I instead ended up spending my days in relaxation and bliss.

Cheng Xu, whose entire property is a waste recycling station, accidentally awakened the system, but why does this system only have a [decomposition] function? So let’s start by refining the gold in circuit boards.

“Wait, I seem to be able to use it to probe?”

“It seems to be good for repairs?”

…

Since then, Cheng Xu has become a humanoid X-ray machine, a humanoid 3D printer, a maintenance master…

But when Cheng Xu completed the first system task, he found out that he really unlocked the system now?

This book is also known as “One Thousand Ways to Use the System” and “My Roommate Who Collects Waste at Home Becomes My Mentor after a Summer Vacation?” “, “You want to marry a waste collector? 》

- Description from novelbuddy