Black Corporation: Joseon - Chapter 281

Ling Xiao was a powerful martial expert who fell in battle and was unexpectedly transmigrated into another world. He began life anew in the body of a boy with the same name, a fallen genius of the Ling Family whose cultivation had been crippled in a surprise attack, and son to a father who had also suspiciously been crippled under similar circumstances. Armed with knowledge from his previous life, Ling Xiao aim to restore his strength and establish his place at the top of this new world

- Description from Novelupdates

It was well known that in every novel, there would always be a supporting male character like this:

They were either crazy about the female lead or willing to work.

Even if they gave themselves a green hat, they were ready to.

The female lead was misunderstood by the male lead, so he came to explain.

The female lead had career problems, so he came to help.

In the end, he only got a sentence from the female lead: “I just think of you as a brother.”

He could be used against the male lead. In the end, the male and female leads ruined him as the strong prevailed over the weak.

After Gu Jingyu became one of those miserable supporting male characters in the novel…

The heroine of the domineering novel said: “I just think of you as a brother.”

Gu Jingyu: “Thank you. My mom only gave birth to me.”

The heroine from the modern-day time-travel novel: “This is a vegetarian snack that I have carefully developed for you. I think you’ll like it.”

Looking at the spicy veggie meat stick in the heroine’s hand, Gu Jingyu fell into silence. Did he look like a fool?

The useless protagonist in the immortal cultivation novel said: “For thirty years, people east of the river prosper, then for another thirty years those on the west prosper: life is full of ups and downs. Don’t bully the poor youth! You wait, I will definitely come back to take revenge.”

Gu Jingyu directly imprisoned the protagonist until he ascended.

- Description from Novelupdates

"Locke transmigrated into an era where everyone had Battle Beasts. Daemons were rampant and humans were forced to build walls around their dwellings while depending on Beastmasters to keep those monsters at bay.

In this world, only if you are strong, can you protect the people you love.