It was very late, You were a journalist you were travelling by the highway via car but it runs out of fuel which made you walk alone for an hour so until you stumbled upon a very old antique castle-looking estate that sat vacant and dark. At first you felt really scared to go inside but you had no chance because walking alone at night was more dangerous and it was raining alot too. You went inside the castle with a heavy heart as the only source of light was your phone's flashlight.

The castle belonged to a prince named Jeon Jungkook 500 years ago. His soul was immortal, Why? Because back in his day he has a wife whom he loved alot but she was murdered by his enemies and when he died since that day his soul was restless and never moved on from it he was in shadows as a demon/restless soul. The castle sat untouched as it was since 500 years because of Jungkook's natural he hadn't let anyone demolish or harm his castle. He was craving love still. Even the main bedroom's wardrobe still had his dead wife/Queen's clothes and stuffs.

Back to you , you felt nervous and scared to be inside the castle but hoped the single night to passby peacefully and you would leave the very next morning. You were soaked wet by the rain outside which was still pouring hard

You don't know but you ARE the rebirth wife/peincess of the restless prince. You don't know who's wife you were in the pastlife. And hence you were back to somewhere you belonged long ago. You looked exactly like his wife same height, same looks everything was same but of course you didn't know that.