This one is super old, but it fits request perfectly.
https://www.mangago.zone/read-manga/earthian/
This can include in that description
https://www.mangago.zone/read-manga/futari_no_musuko_ni_nerawarete_imasu/
Sangyang:The Wanderer
https://www.mangago.zone/read-manga/sangyang_the_wanderer/
Sangyang:the Wanderer
Glory Days (华年) in bat0
I want some forbidden love type of shit give me the angst where they're together but know they shouldn't be no love triangle or sa pls