I'm Your Husband's Brother - Don't Be Mistaken!

"Peaks are so frickin' high, ahhh!!!"
Transmigration was never one of Lei Song's backup plans; but why not do all the readers a favor since he's here anyway?
The plan's simple. Nudge together the massively-shipped couple, reverently cheer them on from the sidelines, and hopefully live out a normal Sect Master life.
Thing is, this is the elder brother's body that he's taken. And the elder brother---
Let's just say he didn't meet a nice end.
T-T
Now, this silently grieving reader must avoid the MC's violent aura and tie together the main pair responsibly to show how sincere he is, thus protecting his limbs and a normal chance at death.
Easy, right?
That's what he thought too... until the story's hidden plot began to show itself.

"Every story protagonist has a golden finger, right? ....right?"

P.S. This is an original story.
(Photo used in cover is not owned by the author. Credit to the artist.)