MTL - Marvel: Start with Level Five Mutants - Chapter 2 omega mutants

Dr Dalton Wyatt, a world renowned Scientist and Inventor is transmigrated to the body of a high school student Dalton Wyatt who committed suicide due to unfortunate circumstances and complicated life.

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

As a wife fan of the popular idol Huo Xi, Qiao Qiao’s most hated person is Sheng Qiao, an actress who ties up with Huo Xi for hype.
Besides taking camera to join some activities, her major daily life is to diss this white lotus sincerely.
She doesn’t expect that she becomes Sheng Qiao after her head was hit one day.

During the shooting process of her first cooperated love drama with Huo Xi, the first scene was NG for 27 times.
Huo Xi: Sheng Qiao, can you do it or not? If you can’t , you can be replaced!
Qiao Qiao: Husband, don’t be angry, I can do it!
Huo Xi: ? ? ?

Media: Sheng Qiao Leaks Out a Close Appellation, Huo Xi’s Hidden Marriage Exposure
Fans: You f*cking shit, Sheng Qiao, you lotus bitch, come out quickily and apologize and clarify!
The next day, Sheng Qiao explains in Weibo: Well… Wife fan, get to know?

Fight back in a desperate condition and hold the throne strongly.
[From being sneered at by all netizens to being supported and liked by them, the heroine also falls in love with her idol by the way.]

Popular star Sheng Qiao is recently photographed dating the Film Emperor.
In an interview with the media, Huo Xi is asked to send his wishes to this fan in the entertainment circle.
He looks coldly at the camera: Fake.
Sheng Qiao dispels rumors in Weibo hurriedly: I only like my idol. I’m not double-minded. Thank you.
At that night, idol gnashes his teeth in anger next to her ear: Announce our relationship. Immediately! Right now!

- Description from Novelupdates

One day, I woke up only find out that I’d become a Demon Lord, an individual responsible for protecting a dungeon. The world I’d been spirited away to was one filled with violence. Gigantic monsters wandered through it and competed with each other each and every day for the right to survive. I had no choice but to strengthen my dungeon’s defenses in hopes of living another day—or at least that was what I’d thought. For some odd reason, I instead ended up spending my days in relaxation and bliss.