Lin Zhe, a 21st-century college student, transmigrates into the body of a 6-year-old child. He wakes up in a room decorated with images of Action Kamen, confirming his presence in the world through the Nohara family's house number and the streetscape of Kasukabe. Shocked and bewildered by his childlike reflection in the mirror, he simultaneously receives the original owner's memories, learning that he is a transfer student at Futaba Kindergarten, thus beginning his new life in Kasukabe. ...

Having transmigrated into the body of Hiroshi Nohara's younger brother, a graduate of the University of Tokyo, I was only twenty-five years old when I received an international academic award.

He thought he could sweep through the scientific community with his talent, but he was mercilessly defeated by his five-year-old nephew.

"Uncle doesn't even know Action Kamen, how silly of him—" Shin-chan shook his head and sighed, while the beautiful teachers covered their mouths and chuckled.

Late at night, Nini's mother quietly knocked on the door: "Um... actually, I'm a big fan of your research..."

Suddenly, a shocked gasp came from outside the crack in the door: "Uncle, what's going on?!"

[Gantz + No IQ Loss + Comprehensive Anime + No Female Lead (Single?) =? ? ?]

Traveling through time and becoming Okahachiro, this time, I'm going to kill the devil!

The evolved system: "Stealing the protagonist's opportunity will get you more rewards, Master~"

Chen Ming: "Steal? They're all mine!"

…

System: "Master, I was wrong!!"

Nishi Joichiro: "He really has changed..."

Izumi: "If it's him, maybe he can really succeed..."

Fuuinzaemon: "Oka, let's see who of us has killed more bosses?"

Xing: "Brother Oka is mine, Leijia, don't take it away!"

Reika's face turned red: "Oka, やめて!"

(The world view is inspired by Slaughter, and there will be a lot of secondary creations, please be tolerant)