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>Now that Ren knew that the Dragon Queen was on their side, he didn't hide anything from her. He told her everything about their encounter with the people from the Valley Kingdom, as well as what they had been able to find out from their investigations. Ren hesitated for a moment, considering whether he should tell her about what Fang had faced in the Orchid Orphanage before Ren had found him – and then decided that he should tell her. From their interactions with the Dragon Queen and the Dragon Nation so far, Ren knew that they were trustworthy and very protective of Fang – and Ren knew that he could rely on the discretion of the Dragon Queen.</p>

152 – Discussions with the Dragon Queen