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

Ren blinked slowly at the gathered team, confusion reflecting in his eyes.

Only Fang understood what that meant. "Ren," he asked in a quiet voice. "Do you have a way to save her?"

Ren nodded. "Surgery," he said. "We have to clean up and seal the rupture in her brain, if there's a rupture, and we have to remove the contusion if there is one – that's all."

"Do you even know what a complicated surgery this is going to be?!" one of the professors shouted. "There is no one capable of doing it!"

Ren's golden eyes flashed with anger. "So you want us to let her die without even making an effort?" he asked in a very cold voice.

Everyone in the room (and most were easily twice the age of Ren) shivered involuntarily.

"It's not a matter of whether we want to or not," another professor murmured. "Chairman Ren, it's just that we don't have the expertise for a complicated surgery like this…"

106 – Ren is Very Impressive