beta
Its gonna be a very confusing description but im gonna try. So its a side story that is focused on more near the end i think and the top had silver or white hair and was taken care of by his crush when he was a little kid and when his crush was a young adult or teen and the bottom had black hair and they reject the top like alot but in the end get together
https://www.mangago.me/read-manga/my_darling_is_a_foreign_crybaby_official/
I don't think this is it, but the character description is similar if you want to try
The top has short sliver/white hair and the bottom has short black hair the top has had a crush on the bottom since he was toung and i think intoroduced to him by the main character? I dont rlly temember but its side story character in a popular manga i read a long time ago i cant find it