I Can See Your Stats! (Official)

An estate to manage, a lover to tame.
Following the gruesome death of his family, mage Eyra inherits the Solath Estate and becomes a lord overnight, only to discover that he can suddenly see the stats of everyone he meets. Enter Yanu, a dashing jack-of-all-trades who seems hell-bent on distracting him from his newfound duties...

Original Webtoon
Official English

The webtoon released as R15, it's not R19 like the novel