Need some good 50 episode k-drama suggestions. I want good romance, cool leads, romance, modern setting.

I've almost finished Bad Thief, Good Thief, and am enjoying it. I also watched Monster up to episode 25, but dropped it for some reason I don't remember. Is it worth continuing? Also watched The Flower in Prison and really liked it, but not too much in the mood for historical atm.

New tales of a Gisaeng

Life is beautiful (2010)

Glorious Days

Ojjakgyu Brothers

What happened to my family

Five children

My daughter lee sooyoung

jang bori is here

Ugly alert - its a 100 plus episodes but since duration is 30min per episode, so its probably around 60episode

All about my mom

King of baking kim takgoo

Yoona's Street. It's a slice of life, which is a rarity among 50+ episode Kdramas. I can't recommend it highly enough. It has romance, but it's not really the focus of the story.