Deep In - the manager of one of the leads' wears a wig and even removes it in anger at one point.
Time slip
Jin (2009) - A brain surgeon named Jin from the 21st century time travel to the Edo period.
Blind
Last Twilight ML is a badminton player that goes blind.
Forbidden
The Blue Whisper: Part 1 (2022) - There are forbidden love stories between spiritual masters (aka demon hunters) and demons
Piano
Four Hands Two Sonatas (MLs are pianists)
Athlete
Weightlifting Fairy Kim Bok Joo (2016) - Most of characters in this drama are athletes
Ramen
Dive Into You -siblings switch bodies and then the brother practically scarfs down a bowl of ramen while in his sister's body.
Attack
Strategist Kanbe - The drama is set in the Warring States period in Japan, an era of civil war with constant wars between hundreds of domain lords. The protagonist was a real-life strategist serving a powerful Lord in that era.
Poison
My Royal Nemesis-FL was forced to drink poison to end her life
webtoon
True Beauty Adapted from the webtoon "True Beauty" (여신강림) by Yaongyi (야옹이)
pirates
The Pirates (2014) - FL is a pirate captain
Novel
Miraculous Brothers-ML is considered a 'failed' writer but he passed off someone elses work as his own and finally got a best selling novel
fish
A Dream Within a Dream (fish lanterns)
Dentist
Strangers from Hell- ML is a dentist with a murderous hobby
gold
Against The Current (FL is awarded gold nuggets)
Necklace
K-Drama 
