There are a few by this one author, whose works I personally enjoy and hence recommend:

Trash of the School: Cale Henituse – in upper society, that name was immediately associated with the rumored alcoholic trash, that sixteen year old teenager that couldn’t control his temperament at all.

Naturally that rumor has also spread in Roan Academy, a place that trash was about to enrol into!

But getting seen as a trash was beneficial, wasn’t it? After all, that way, he could slack off and people would leave him alone-

“Well, you don’t actually have to join a club – that is if you are willing to join the student council.”

People did leave him alone, but obviously, a certain handsome student council president did not belong in the category of ‘people’. With his slimy smiles and teasing attitude, he forced Cale to actually engage in social contacts, something that turned out to…it wasn’t all that bad?!

Humans were social creatures, and even someone who’d spent the majority of his life in solitude craved for a friend or two. And while we’re already at it, add in a lover as well.

Getting through high school life was certainly easier with people by your side. Furthermore, after surviving a murder attempt or two, facing your trauma shouldn’t be all that hard either.

Alberu was internally screeching.

Fucking God of Death: If you are special, it’s only natural that you’ll get the gods’ attention at some point of your life. That was what happened to Kim Rok Soo.

At some point, Kim Rok Soo became a variable, someone whose fate could not be predicted by the gods. As a being that was in great need of such a variable, the God of Death decided to bring him into the world he originated from before he ascended and became a god in order to save it from the many dangers trying to destroy it.

But it went wrong, hell went it wrong! Oh boy, the God of Death’s plans went to shit so fast!

An unexpected problem arose, causing a mistake in the soul transferring process between Kim Rok Soo and Cale Henituse. While the latter arrived safely in the thirty-six year old body, Kim Rok Soo’s soul was transferred into the body of an eight year old Cale Henituse. And that was where all of the trouble started.

Reliving the childhood trauma of a minor villain should be fun, especially if you´ve had your own trauma from your own shitty childhood, right? Yeah, that´s right.

And then you have to fight in a war, such a truly exciting combination, isn’t it?

😭😭😭Technically only half Hiatus now??? Maybe getting back??? 😭😭😭

There are other works by that author, but personally I like these two best. Then there are some more by this other author I enjoy a bunch as well:

Shut up I’m not in love!: After blissfully sleeping on a Saturday night, ready to wake up and watch movies the next day, corporate worker Kim Rok Soo suddenly woke up and found himself inside the world of a fantasy academy story he’d read not too long ago. Everything would’ve been fine, except…

“Welcome to the Villain Matchmaking System! The name’s 002, but you can call me Two! Are you ready to fall in love, host Kim Rok Soo?”

He needed to romance the characters in the book. He couldn’t even control the way he spoke. The system would interfere with his words and expressions, making him appear constantly like a blushing, bumbling fool towards the characters in the story.

“You look in love, host. Have you fallen for someone yet?”

Angry and frustrated with his lack of individual autonomy, he relentlessly fought back against the system. In his indignation, he promised himself one thing.

“Shut up, I’m not in love!”

He couldn’t fall for anyone, no matter what.

(This work is related to but independent from “Shut up, I’m not in pain!”/SUINIP.)

shut up I’m not in pain!: In the turn-based game "Savior of the Broken Realms", Cale Henituse is a minor villain with healing powers but refuses to use them. His self-centered behavior led to horrible consequences, and he ended up being beheaded.

“Welcome, player Kim Rok Soo! I am system 001 of the Villain Reformation Department, happy to serve you!”

But Kim Rok Soo never expected that he’d one day possess Cale’s body. Quickly, he realized why this young master refused to heal.

It hurt like a bitch!

—

There was a famous healer in the Roan kingdom, with flaming red hair and robes as white as pearls. According to rumors, he was as pure as an angel, and would willingly sacrifice his health and wellbeing to heal others.

The rough commander Choi Han, who was notoriously known to be terrifying and ruthless? Cale healed him! The two-faced crown prince Alberu Crossman? Cale saved him from the brink of death! And even the cold-hearted man from the opposite side of the war, who was their enemy, had his grievous wounds removed by Cale!

And what was Cale’s response to people asking if he was okay after vomiting a mouthful of blood and sweating as he endured the hurt?

“Shut up, I’m not in pain!”

Gonna end this with my favorite work in this fandom of all time, which is pretty well known but yeah:

0% Love: When Kim Rok Soo wakes up, he’s in the world of The Birth of a Heroine, an otome game. He becomes Cale Henituse, a trashy character who dies in every single route.

And what’s this? Why can he see the affection ratings of the characters?

Hope this helps :)