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

After the excitement of the magnificent wedding of Princess Una and Zeus, things were quiet and smooth sailing for several weeks for everyone.

All the babies except Rhea were settled in their school going rhythm, and Ren and Fang were both back at work, dividing their time between SIMS, Sirocco and Zephyr.

Ren's health was much better, too. He seemed to have recovered completely, and the people at both SIMS and Sirocco were so pleased to have their favourite Chairman Ren back that more than half of them shed tears the first day Ren came back to work looking hale and hearty.

With the improvement in Ren's health, Fang took a turn for the better, too. He was even busier than Ren – partly because he was practically glued to the new baby as much as possible (baby Rhea often accompanied Fang to work, even), and partly because he was planning a big surprise for Ren.

221 – Movement in the Valley Kingdom