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

Things were back to normal when Fang rejoined his school trip. Several teachers praised him publicly for his selfless care of younger children at the orphanage he used to live in and most of those who had believed the rumours had come to apologise to him. As for those who had started the rumours, they had been suspended and sent back to Cosmopolis. Fang could only appreciate Pax's efficiency and make a mental note never to get in Pax's bad side!

Wade had also come to apologise, and since it seemed like he'd come to his senses, Fang had taken pity on him and advised him to let Ren cool off for a bit before approaching him again.

As the school trip approached its end, Fang became rather reluctant to return to Cosmopolis without Ren. He'd finally truly come to understand why they said home is where the heart is. And Fang's heart was with Ren for life now...

84 - A Damsel in Distress