Cute: https://www.mangago.me/read-manga/behind_the_scenes_scandal/
Cute and the sex scene is good: https://www.mangago.me/read-manga/afterglow/
Tw: rape, psychological (ig), thriller : https://www.mangago.me/read-manga/two_in_six_billion/
Kinda sad but cute: https://www.mangago.me/read-manga/ikemen_kun_to_saenai_kun/
Sex is good: https://www.mangago.me/read-manga/when_i_quit_being_a_corporate_slave/
Oh shit sorry mate i misread the manhwa as manga. But the first one is manhwa, u can ignore the rest
https://www.mangago.me/read-manga/the_mansion_summoned_by_ghosts_cupid_scans/ vampire
https://www.mangago.me/read-manga/save_me_will_you/ ragebaiter
https://www.mangago.me/read-manga/release_your_persona/ top tier intimacy
https://www.mangago.me/read-manga/even_the_trash_was_originally_new/ mafia
https://www.mangago.me/read-manga/on_the_lake_where_the_waves_reach/ emotional :)
Recommendations short manhwa less than 15 chapters any genre is fine