Yandere/Obsessive seme
http://www.mangago.me/read-manga/in_the_cage/
http://www.mangago.me/read-manga/kimi_ga_koi_ni_oboreru/
http://www.mangago.me/read-manga/hogu_hagyeongsu/?av=2
http://www.mangago.me/read-manga/last_seven_days/
http://www.mangago.me/read-manga/may_belongs_to_me/
http://www.mangago.me/read-manga/ii_mon_waru_mon/
http://www.mangago.me/read-manga/yandere_hitotsu_yane_no_shita/
http://www.mangago.me/read-manga/kawaii_senpai_no_kaigoroshikata/
http://www.mangago.me/read-manga/decision_webtoon/
I’m looking for a manga/manhwa about a woman is an excellent alchemist who transmigrates into the body of another woman. I remember that she saved a teenage boy who later turned out to be an adult man as well as like a powerful person (I think). I also remember that she made a statue guard/Gollum that was a handsome man.