Surviving as the Sickly Younger Brother of a Villain

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I reincarnated—was it possession? transmigration?—into a 19+ dark romance fantasy novel.

As Serjin Dellensing, the first victim in the original story.

He was betrayed by someone he thought was family, had his mother, name, and entire life stolen, and died a miserable death when his chronic illness worsened.

His body is frail, his education lacking, and in a noble society dominated by Alphas, surviving as a Beta is nearly impossible.

The only thing he has going for him? A heartbreakingly beautiful face.

I couldn’t care less about the original plot.

What mattered was saving the mother—who, in the novel, is executed by Serjin’s older brother.

I had to appease that psycho just enough while finding a strong marriage prospect or an ally.

Before they discovered I wasn’t a true Dellensing and stripped me of my surname—or worse, exiled me.

But then…

“You said it yourself before, didn’t you? That your body doesn’t react to pheromones, and that I should come find you if I ever needed someone.”

“I’m just glad… you’re my little brother.”

“Only you could do this. You’re the only one I can show this weak side to… because you’re my little brother.”

Turns out he’s not just a psycho—he’s a twisted pe*vert who lusts after his “little brother.”

Associated Names
One entry per line
악역의 병약한 동생으로 살아남기
Related Series
N/A
Recommendations
Why Did I Have to Transmigrate as the Villain’s Younger Brother? (1)
Raised Him to Be Filial but He Turns Out to Be a Yandere (1)
Recommendation Lists
  1. Complete Korean novels 1
  2. Step brother(bl)
  3. Royalty and Nobility
  4. BLs i dropped (2)
  5. Omegaverse and others bl

Latest Release

Date Group Release
07/22/25 Cherry Mist c2 part2
07/19/25 Cherry Mist c2 part1
07/16/25 Cherry Mist c1 part6
07/16/25 Cherry Mist c1 part5
07/16/25 Cherry Mist c1 part4
07/16/25 Cherry Mist c1 part3
07/16/25 Cherry Mist c1 part2
07/16/25 Cherry Mist c1 part1
07/15/25 Cherry Mist prologue
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Lioness18
Lioness18 rated it
April 23, 2026
Status: Completed
I thought this novel was simply okay, Because I wasn't really impressed with the MC. As the tags/ title mentions, the MC is weak and sickly, but I still expected him to be more proactive about getting revenge and or perhaps changing his tragic fate. In reality though, he didn't really do much.

This book is a transmigration/rebirth novel which was both confusing and unnecessary. It was hard to figure out if the character had lived a full life and then died and transmigrated into a novel or whether he was... more>> always the character, died but then became a Korean citizen and then was sent back into the novel. Very confusing. It Should've just been a rebirth novel where the MC's goal was to escape his fate and save his beloved mother.

Spoiler

The same beloved mother who he barely had any scenes with, so it was really hard to feel the devotion he had for his mother.

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His plan was to... well, to be honest...I don't know what his plan was actually. He would decide to do things, but there would be no follow through or he would change his mind half way through. He really didn't have a concrete plan for how to save himself and his mother. At one point, his goal was to educate himself about the world &its people because he had isolated himself in a tower for over a decade, hoping that would give him a leg up, but then he encountered the villain, his brother, and the ML, and then that plan went nowhere. Once the ML stepped into the scene, his character just became even more indecisive and easily controlled, which defeated the whole purpose of being reborn... transmigrated... whatever.

Spoiler

After meeting the ML, he tried to get on his good side while planning his escape, which was to be introduced to society and marry. The MC thought that marriage would prevent him from being punished by the ML for living as a fake heir for 20yrs and would give his mother, who lied about her son's father, a way out as well. However, getting on the ML's good side was obviously pretty hard because he was very vocal about his hate for the MC. So to soften the ML, the MC would cry, show his submissive side and cling to the ML calling him "hyung". The MC actually thought his plan was working because the ML took him on a trip to meet the Crown Prince, a potential match. But on the day of the meeting, the ML abandoned the MC, which was actually very dangerous for a beta without a "brand". With no brand, or alpha pheromones signifying he was protected, the MC was kidnapped in front of a crowd & almost gang r*ped. After the incident, the MC learned he couldn't trust the gentle smile or sweet words of the ML, which honestly, he really shouldn't have needed this incident to happen to NOT trust the ML. The ML was responsible for a number of deaths in his past life, so I didn't understand the MC's forgetfulness or naivety. However this distrust in the ML didn't last long because as soon as the ML would do something nice again, while the MC would be initially suspicious, he would still give the ML another chance. Considering how traumatic the almost assault was I don't think his reaction or lack thereof made any sense. The MC just kept excusing the ML's actions because he felt guilty for living as his brother despite not being blood related. The need to accept the ML's poor treatment or pay the ML back made zero sense because remember, the MC had been reborn. He's already given up His life for something he had no control over, but apparently any ill will he had faded and he was ready to do it again. Which again made no sense because the whole point of being reborn was to one, live and two, leave his father's (the Duke) estate and live without a sword over his head.

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The MC never really got out from underneath the ML's thumb, even though in his mind he thought he had everything under control. It also didn't help that he stopped trying to learn about the world, so he would just take the ML's words as the truth, not knowing he was being taken advantage of until it was too late. You would think he would ask his personal servant, the person who attended to him while he was isolated in his tower for years, but for some reason that never really occurred to him. The ignorant MC fell right into the ML's hands, literally. It started with wandering hands, then long hugs and a kiss, in the name of branding, and then it became "helping" the ML as brothers should, since the ML didn't like pheromones &the MC was a beta, and then it evolved into even more. The MC would tell himself he was doing all this as a way to survive but there was no follow up to this plan. It was only when they both caught feelings after all the "touching" that the MC remembered his desire to leave his home and actually started taking steps to leave.

Spoiler

He just asked his mother if they could take a trip together, which could've been done in the very beginning, but I guess then there wouldn't be a story.

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Along the way, there were some twists, some hidden feelings and desires, lots and lots of s*x, but I think the main mission or premise was lost along the way. I mean yes the ultimate goal was achieved but not really because the MC did anything grand or smart or even courageous. I think he only got as far as he did because of his appearance. I mean, no matter how much the ML said he hated the MC, even he had to admit that he thought the MC was pretty. <<less
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