Lost Romance (2020)

The ML will fall into a coma, and the FL who wrote the story of the ML who is a character in his book, will enter the space time of his Novel to be able to save him and change his destiny

Lost Romance is about a woman being sucked into a cheesy CEO-love romance book. She finds out that she's supposed to be the side character that bullies the FL of the romance book and is determined to capture the heart of the CEO while being friendly with the real FL. The relationship is hate-to-love.
Memories of the Alhambra is about a VR game glitching and becoming part of real life (it's hard to explain. Let's say that you were shot in game and die, you die in real life too. And, if you take off your VR glasses, the game console doesn't disappear). The relationship is also hate-to-love.
Both of these dramas focus on the death/coma of an important character and both focus on survivor's guilt.

transported to a different time/dimension and finding romance and a way to return to own reality
wealthy ML , dyanamic FL

they both deal with either a virtual reality or an alternative reality. The leads have to fight to stay alive and solve the mystery so they can return to the real world.

A girl who usually liess all the time gets punished with a curse to wich every lie comes true one day she lies about having a rich ceo bf and the dude pops out of the novel

Character who travel in the novel story and who wants change the plot , and fell in love with the ceo

the same plot but the era is different

A story about a temporary-staff worker who finds refuge in the fantasy world of a comic, Rose of Versailles. Katsuko's mediocre days is put to an end when the son of her company president arrives at her office and lays out unreasonable a cost-cutting policy which upsets Katsuko. Her inner ear hears the voice of Oscar, the main character of "Rose of Versailles" who stands up for the people, and decides to take action against him to save her helpless colleagues

Both have character in book concept. A love story between character in book and person in real life.

Both ML and FL character travel into a novel universe
Both FL is supporting character or extra's for the story.
Both the FL known to be evil character inside novel.

Lost Romance is about a girl going into a romance novel and meeting someone who looks exactly like her crush. In real life, her crush is in a coma, but in the novel he slowly develops a romance with her. Of course, everything that happens in the novel can't affect real life... or can it?
Someday or One Day is about a girl travelling into the past and meeting a boy who looks exactly like her dead boyfriend... except he isn't her boyfriend... or is he?
Lost Romance is really funny, meanwhile Someday or One Day will leave you with tears trailing down your face.
Both of these dramas have the same actor. The second-male-lead in Lost Romance makes a cameo appearance in Someday or One Day (hint, if you want to see him kiss a boy...)