Hello! Your description sounded real familiar of a yoai I read before, but I couldn't remember the name of it. So I went around a couple tag searches and found it. I hope this is the one.
https://www.mangago.zone/read-manga/employer/
wait i think i know this. did the son run away from home after seeing their relationship? and then the father died. the butler searched for the son, the son returned and claimed his inheritance and the butler?
Yes, but the father isn't dead when the son comes back.
No, this is manhwa. I asked for manga. It's black n white
Yeah kinda kinda. I don't remember exactly
But yeah. He was not present when father died and returned afterwards
I feel like I read a fanfiction exactly like this once
I read this manga here on mangago a like years back. Idk if it was a fanfiction
replying to camp here
It's a yaoi. There was a father, son and their butler. The manga has a scene where the son saw his dad doing the butler on the table in dad office like from slightly open door, he was quite young at that time. And after his father death, he did the same thing that his father did on the same table with the butler. I think butler loves the dad.
Its similar in style to Under the Skin (KUSABI Keri)