My Poison Lover (2022)

Both shows have a modern day FL who ends up in a historical game like setting in which she has a guide who helps her/gives her tasks to complete.

Both are short length mini dramas in which a modern day actress FL ends up in a historical game like setting in which she has a guide who helps her/gives her tasks to complete, and falls in love with the royal ML who is supposed to die in the story.

Both mini dramas have a modern day FL who finds herself in the past where she becomes involved with the ML.

Both are mini dramas about a real world FL who enters the world of a historical game/VR where they find true love.

Both are short dramas with a modern day FL in a historical game like setting in which she has a guide and must complete tasks to return home. Both MLs are royal.

The two dramas are an inversion of each other - one is a real world person entering the world of a historical game, the other is a person from a historical game entering the real world.