(The writing isn't great, so please don't read if that's not your thing.)
In his previous life, Ji Yanqing rejected his childhood friend’s feelings for the sake of his career. He eventually attained a high position and lived in comfort, but came to miss the childhood friend who was far away on the frontier. Reborn, he looks back on the terrible things he did and deeply regrets them, swearing that he will win his childhood friend back.
...Later, he discovers that his feelings for his childhood friend have become impossible to control.
Both are reborn.
A two-faced young master vs. a scheming big shot
Theme: What even is this theme supposed to be?