You travel back in time somehow and your in an old tunnel, dressed in a hanbok

“Ah my head what happened.” you say in pain, forgetting your memory. You walk out of a tunnel.You see a warm bath and a castle. There are princes inside the castle and one spots you. Just then a random lady Grabs your arm

Random lady:”My lady you can’t be here.”

you look at her confused “Who are you?”

she Leads you out the other side of the tunnel.