I watched the first 2-3 episodes of a series from an older drama...
The father was some sortr foa businessman, and he had a teenage daughter.
I believe they were going to see thir grandmother (daughter's grandmother on a train; a paranormla event happened and they exchanged bodies.
Now the teenage girl went to work (in Daddy's body) and Daddy goes to school, in daughter's body...
It may have been a Jaanese series, but i am not sure.
Due to change in jobs, I couldn't finish the series and was wondering what happened to both!
I am semi-retired now, and was wondering which site would be best to try and search for it.
I will know it when I see the first episode!