Superstar From Age 0 - Chapter 603:

Kaelen Dragonyx, a boy who lost both his parents and his mentor in the most ruthless way possible, decided in his heart to become the strongest swordsman in the world to protect the last remaining family he had, which is the only child of his mentor and his childhood friend.But along the line, he discovered that he is the most talentless boy of the generation which made his road towards being the strongest swordsman to be much further away and daunting than he could imagine. Be he didn't give up until he stumbled upon a sword that drastically changed his fate.

Hao Ren (literally means “good man”), as his Chinese name suggested, is a good man, and his ideal was to live a restful, comfortable life as a landlord. At least that was his plan before a couple of abnormal creatures rented his house.

A remote, outdated big apartment, a bunch of rather abnormal non-human creatures, and a labor contract from the “god”, the three factors combined lead him to be the busiest landlord and most supernatural “babysitter”. The story of the most complicated, erratic and abnormal landlord and tenants started from here.

“Ever since I put my fingerprint on the labor contract, I knew I was roped into something terrible…”

As a person who is down-to-earth as well as a good Samaritan, Hao Ren desires to live the rest of his life as a benevolent landlord. Stumbling into a curious yet mysterious lady, he began his journey of “collecting” abnormal and supernatural tenants.

His life only became more chaotic when he receives a labor contract from “God”. Discover the many races, myths and worlds that lie beyond what humans define as normal! This bizarre fantasy full of fun is sure to bring you on a crazy rollercoaster of emotions!

- Description from Novelupdates

Xerox Zee had always thought of himself as an ordinary guy—just another face in the crowd. That was until his 18th birthday when his System finally gets Unlocked!.The System revealed a shocking truth: the world he lived in was exactly the same as the plot of a novel he had once read!But instead of being helpful, this turned out to be a big problem.Main Character : “I’m meant to save the world and become the strongest. Everyone else is just there to help me along the way!”Xerox Zee : “Hold on... am I just one of those people there to make him look better?”It seems like I'm just a stepping stones!

A massive underground labyrinth awaits in an alternate world of swords and magic. With a game-like system much more familiar than spells and magic circles, Beatrice has managed her magic and risen to the position of “strongest”, but she still has her worries.

“Bghohhh!! Bshrrrr…mumble mumble…”

“B-Boo Boo! Stop! Stooooooop!! I’ll…I’ll be crushed!? I-is my, ah, love being tested!?”

Who is the legendary man named Boo Boo who, just by taking a nap, can overpower the Level Cap Holy Swordswoman? A thousand meter dragons and a proud elf girl will also show up, so what exactly is going to happen with these residents of another world!?