The White-Haired Imperial Concubine - Chapter 1 - Rejected Outside the Door

A teenager finds himself in the Marvel World with the Dragon Balls, and has to find a way to survive!

Shenron: “Say your wish! Any wish can be granted, but you only get one…”

Teenager: “Any wish could be granted?”

Shenron: “Of course!”

“Great!”

Teenager: “Shenron, please get me out of the Marvel World; return me to my original world!”

Shenron: “I’m sorry, I can’t do that…”

“….”

Teenager: “What? What were you bragging about then, saying you can grant any wish?”

Shenron: “Your body is from this world, therefore….”

“….”

Teenager: “Okay, then give me the power of a Super Saiyan! I want be able to beat Thor and Hulk, surpass Captain America and Iron Man!”

Shenron: “I’m sorry, I can’t do that…”

Teenager: “Worthless dragon! What can you do?”

Shenron: “I can…”

- Description from Novelupdates

One day, Luo Jian woke up from his sleep and found himself in a locked chamber where the door and window were all sealed. A note with a few lines written on it was tacked to the wall: “Escape from this room within an hour, otherwise, you will die.”

There is a sequel called Reincarnation Night (轮回之夜) that takes place in the same universe but has different main characters

- Description from Novelupdates

An innocent boy from Earth who was sheltered all his life finds himself reincarnated into a world full of magic, a world as beautiful as it is horrifying. Fate brings him together with his new loving mother and sister, and they face the trials together as a family. Follow their incredible story as they struggle to survive and create a better life for themselves.

-I could hurt them. I could kill them all, but not you. If it were up to me, you'd never see a drop of your own blood again.–***Destiny is an unpredictable force that no one can control.This is especially true for Tyler, a homeless omega who lives in shelters and works odd jobs to get by.When a rogue Alpha attempts to kill him, Tyler's life takes a turn for the worse.However, things get even more complicated when Sasha, an Alpha, and powerful figure in the mafia, takes an interest in him.Despite Tyler's reservations, he is forced into an arrangement with Sasha, and over time his initial distrust begins to fade.But their relationship is tested when the rogue Alpha reappears, revealing secrets that threaten to tear them apart.Caught in the middle, Tyler and Sasha must choose between confronting the demons of their past or risking everything they've built together.