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

It was only when Ren yawned sleepily that everyone felt a bit tired.

"Everything can be discussed later," Pax said firmly. "Now that we are all assured that Ren is fine and the reflection magic has been undone, let's all go to sleep. No one is allowed to wake up before noon!"

"Yes sir!" Uno said with a military salute, earning himself a swat from his boyfriend.

Everyone got up and helped settle the babies in their beds first before retiring to their own rooms.

Fang hugged Ren tightly as soon as they entered their bedroom.

"I'm really all right, my big darling," Ren said softly. "Don't worry."

Fang nodded tearfully but didn't let go. He followed Ren like a lost puppy even when Ren went to the bathroom to brush his teeth.

Ren didn't object and let Fang cling to himself. Fang kept his arms around Ren all night as they slept.

246 – Professor Luke Calls