Why are you doing this, my Duke!? Webtoon
Ongoing | 반달반지 | 2000 released
Sura's Lover
Complete | Shin yuri | 2019 released
Few stories can have a good impactful ending. This is certainly one of them. From the very beginning we see what Mujin can do to keep Cho-ah for himself and how unconsciously Cho-ah doesn't want that. I knew it wouldn't have a happy ending because Mujin is fking crazy but never have I read a perfect ending such as this one. 10/10 would definitely recommend.
Sakurada-senpai Kaizou Keikaku