Age of Adepts - Chapter 1

A boy awakens alone in the Fairy Tail world, lost and uncertain. As he ventures through this magical realm, he unravels the secrets of his mysterious new identity, unlocks hidden powers, and carves out his destiny in a land brimming with wonder, danger, and limitless adventure.“Check out my other work, Reincarnated as Ash: A Pokémon Tale.”

They whisper my name in fear. Justin Black. The guy who sits in the back of the class, always in black, always untouchable. The one everyone watches but no one dares to approach.They don’t know me. Not really.Because if they did, they’d stay the hell away.I don’t do friends. I don’t do relationships. I don’t do attachments.But then there’s her.June Matthews—cheer captain, golden girl, a walking distraction. She’s everything I hate… and yet, she’s in my way. Assigned to me. Forced into my space. Testing my patience.She thinks she can handle me.She’s dead wrong.Because I have a secret. A place where I go to release the darkness inside me. Where names don’t exist, where pleasure and pain are one and the same. A world where people fulfill their deepest, most twisted fantasies.June doesn’t belong in my world.But the longer she stays, the more I want to pull her under.And once I do… I’m not sure I’ll ever let her go.

After the death of her grandfather, Lu Xiaoxiao, a girl who lived in the 23rd century, lived alone in the villa left by her grandfather regardless of the dislike of relatives.

Suddenly, she found that her grandfather left her a space in Yu Peili. She likes to read novels, fearing that the end of the world will come, and she starts hoarding things desperately.

In the country, it became the body of an 8-year-old girl named Lu Xiaoxiao whose parents both died with the same name and surname. Fortunately, the space has come together, even in this strange era, I can live well

- Description from novelbuddy

In the era of universal mechas, people can go to the endless abyss, collect materials, strengthen and forge their own mechas, and master the power of destroying the world.

Jiang Chen traveled through time and awakened his talent [Immortal Unarmed]. Once the mecha is broken, he can permanently absorb its power and receive multiple bonuses.

…

At the bottom of the abyss, when the Old Demon God finally broke the Titan mecha with great effort, a hand stretched out from the fragments and held down its head.

“Congratulations, you have unlocked my limiter.”

- Description from novelbuddy