Jaywalker_Holmes

Ren, a modern doctor and a secret master magician, suddenly finds himself inside a random book he picked up at the airport...as the villainous older brother of the protagonist. As the bad guy, he's supposed to make life difficult for the Male Lead until the latter grows up and kills him in revenge. However, looking at the broken teenager in front of him, Ren can't help but feel his heart soften. 
Fang was an orphan who had never known what a family is. Abandoned at birth, all he knew was pain and fear. He loved nothing, and wanted nothing...until he saw the angelic Wade. To save Wade, Fang didn't hesitate to sacrifice himself. ..after all, there was no one to cry over him.
But then, Ren appeared and turned his world upside down.

The Villain Saves the Male Lead

"Daddy is handsome, and Papa is pretty," Smoke said proudly. "I'm going to be as tall as Papa and I'm going to have a face like Daddy, so I'll be really cool when I grow up!"

"Me, too! Me, too!" Shadow agreed with his twin brother right away.

"And we shall do the opposite," Snow said, licking her paw lazily. "We will take Daddy's slim physique and Papa's face."

"You girls had better be stronger and tougher than your delicate Daddy," Wolf warned. "I won't have my nieces – or my nephews – be unable to teach anyone a lesson! If anyone dares to pester you, I want you to be able to beat the pulp out of them right away!"

"Yes, Uncle Wolf," all four babies said together at the same time, making everyone chuckle.

Sylvia turned back into her snake form because her human baby form still couldn't speak as clearly and most of her words came out garbled, much to her annoyance.

162 – Princess Una