try King's maker (season 1 and 2)
and after King' maker triple crown (only 18+ season 2)
ps. please don't skip season 1, is so goooooooddd
or if u want to stay in the straight one try
http://www.mangago.zone/read-manga/lucia/?TuJB
http://www.mangago.zone/read-manga/a_villain_is_a_good_match_for_a_tyrant/?TO8l
maybe
http://www.mangago.zone/read-manga/the_evil_lady_s_hero/
thank you sm!! ╥﹏╥
(๑•ㅂ•)و✧
im looking for a manga that has a noble plotline of some sort (emperor, empress, duke, duchess, etc) but there is some nudity or sex.. plz don't make fun of me :D ╥﹏╥