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

<p>With Astra's situation sorted out, Ren became a little more relaxed. Professor Klaus insisted that Ren and Fang attend their research team's meetings at least twice a week, though – and Ren and Fang agreed happily.</p>

<p>The babies, too, settled down and made peace with the fact that they wouldn't be able to hold down their Daddy and Papa at home whenever they wanted now, because both of them were very busy with medical school. And they also realised that Ren and Fang wouldn't randomly take them to SIMS – because both Ren and Fang were worried about the babies picking up some infection there. Hospitals were no places to visit, even when they were so sparklingly clean that one could eat off the floors!</p>

103 - The Brilliant Chairman Ren