Assistant of Superstar- Super cute romance, with a childish ML. ? He's so obsessed with the FL it's adorable. No love triangle here, but a super cute watch that'll keep you entertained. If you like this one, I also recommend Moonlight. The MLs are pretty much the exact same. Both dramas give off the same vibes.
Once We Get Married- Clingy ML? Check. Love triangle? Check. Yup, this drama checks the boxes. At first the leads don't like each other, then the ML ends up falling for her.
Sweet Tai Chi- I added this one in because I feel like its underrated.. It's got a good romance with a good plot. There is a slight love triangle, but nothing we'd get 2nd lead syndrome over. If you've got nothing to watch, give this one a go.
Radio Romance- Cute overall watch, It has a love triangle. It was funny to see the the 2 leads "fight" over the FL. Some people love this drama, and some could care less. Up to you!
The Uncanny Counter- My favorite all time thriller/mystery drama. The leads have powers and take down spirits who escaped from the underworld. Super good. My favorite thing about it is that it's not too heavy unlike other thriller dramas. It's got comedy in it as well. You won't regret watching. *hopefully* ?
Professional Single- 2ML syndrome for some
Romance of Hua Rong- Clingy ML.. he's so in love with her. Love triangle as well. Nothing too major tho.
Go Ho's Starry Night- Definitely a love triangle here. I did feel bad for the 2ML, but I still loved the ML. Here, there are 5 guys who like the FL. A lot, I know. But, really only 2 have a shot. The other guys are thrown in for comedic element in my opinion. It's a web series, so it doesn't drag on, and gets right to the chase.
Something about 1%- Clingy ML, falls for the FL fairly fast. Gets jealous easy, etc..
Please Feel at Ease Mr. Ling- Clingy ML, plus a love triangle
Dear Little Mermaid- The ML here is very clingy, very possessive. He's been in love with the FL since their school days, and aims to get her back. It's so good! It's so cute! I love it. There is a love triangle. But thankfully for the 2ML, he gets a girl in the end to. So it all works out.