Seeing double?
No its not it:(
Maybe? https://www.mangago.me/read-manga/kono_te_wo_hanasanai_de/
It’s a manga, not a manhwa though.
Do you remember anything else?
From what i also remember like they became roomates
And they kinda look like the characters on the "introducing my manager"manhwa
This one maybe?? https://www.mangago.me/read-manga/fate_meito/
From what i remember the bottom is dark blu haired the top is white hair
Its omegaverse .from whta i remember its either the bottom is late prenting as an omega or hiding that he is an omega .its school life i hope yall can help me find it