Love Potion (2022)

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

Both dramas feature a modern day FL in historical times with VR elements.
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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.

Both are short (movie vs. drama) with a modern day FL in historical times with VR elements. Both MLs are royal.