Love Better Than Immortality
Novoland: The Castle in the Sky
Perfume
Princess Silver
The King's Woman
The Legends
Delightful Girl, Choon Hyang (the 2nd lead)
Eternal Love (one of the side characters, and in the "3rd life" the male lead kind of)
Meteor Garden (the first version of boys over flowers that was made so it's old. but don't go past the 1st season)
Rule the World
Scarlet Heart (the chinese version was better in my opinion, but again don't go past the 1st season)
Story of Yanxi Palace (in later parts but not full on obsession)
What Happened in Bali (I marathoned it so it can be a bit depressing in big quantities at once)
maybe Chronicle of Life , My Love Eundong
Kenja no Ai , Chugakusei Nikki, Love and Fortune - not so much on the dominant though