I, the slave boy, awaken with the most potent seed!! - Chapter 26: Alchemist

While returning home from a boring day of work, a black hole opened up in front of John and sucked him in. Before he was floating in the blackhole, a helmet latched on to him. "Uploading A.I under progress...Activating Survival Kit" A weird robotic sound appeared within the conscious of John and suddenly a white energy enveloped him... After opening his eyes, John noticed he was teleported to a whole new world. A world of magic and he was a user of a system. Arkon, the world John was brought too, was a medieval world which is 10 times bigger than earth. This new world held many new mysteries and this was the beginning of John's adventure. John will dominate and stir the world with his new system. Old technologies begone and use my advanced techys instead! Ha! you want to hold a politic, economical and military war with me? Sorry but my system is too broken for you all to counter.

In the 21st century Earth gave Birth to greatest genius ever. A genius who Master myriad of arts. Medicine to Engineering. Mathematics to Micro Biology. Weapon Designing to Environmental control. Music to Painting. Dance to Martial arts. He mastered Everything.

Aomori, who has a monster-fighting system, came to the world of One-Punch Man and gained the ability to enter various instances.

Therefore, “Founder of the Hero Association”, “NO. “And other titles fell on him one after another.

Comprehensive flow, the main world One Punch Man.

Completed dungeons so far: Pokémon – Demon Slayer – Sword – Pokémon – Digimon – Spell Return – Yokai Comprehensive World (Girls that Noragami Inuyasha can see, etc.) – Pokémon – One Piece-re0-Dragon Ball wait.

- Description from novelbuddy

[Tenant: 002][Name: Reiko Onodera][Physical Strength: 5][Intelligence: 5][Charm: 9][Daily Rental Payment Required: 666 yen or role-play as a housewife daily (paid)][Daily Income Generated: 5,000 yen (settled)][Tenant Desire List:][1. Wishes to find a suitable job (X)][2. Hopes to bring her daughter to live together in Tokyo (X)][3. Has found a dependable person in Tokyo (accomplished)]…………Living in Tokyo, collecting rent while lying flat.The widow working part-time away from home, the heartbroken beauty who ran away from home... the tenants are all strange...