Pleaseeee

Honestly the BEST I can give you is manhwa where one is really possessive

https://www.mangago.me/read-manga/the_symbiotic_relationship_between_a_newbie_and_an_oldbie/ This one may or may not be what you’re looking for depending on how it develops. They haven’t gotten in a relationship yet (give it like two chapters max), but the mc shows some possessive tendencies (he thought about locking the ml up)

https://www.mangago.me/read-manga/alphega/ Yandere? No. But I’d say one can control the other. We aren’t really sure yet since there’s only twenty chapters

https://www.mangago.me/read-manga/paljae/

https://www.mangago.me/read-manga/the_night_is_soft/

https://www.mangago.me/read-manga/a_room_without_space_side_story_1/

https://www.mangago.me/read-manga/don_t_mess_with_the_puppy/

https://www.mangago.me/read-manga/eyes_clouded_by_the_tiger/

Normally I’d tell you my thoughts on the stories I recommend, but I have like, NO TIME RN.

Bro, bro, thank you so much ε=ε=(ノ≧∇≦)ノ