Welcome 2 Life (2019)

Both male leads are living in a parallel reality, both dramas have violent crimes in common and police investigations.

Similar Supernatural Story. A chance to change for the better for the selfish protagonist.
A bit more character driven to be honest

- both have a main character who goes into an alternate universe where they are married and have children
- the only difference is wonderful nightmare isn’t about law like welcom 2 life
- they both have fantasy and romance genre in it

Both have a main character who goes into an alternate universe where they are married and have children.
Welcome to life is about law while switch is about actors.

They both have a parallel universe in which the main male character can travel to and from under special circumstance.
Both female leads are police officers.

Both drama's have the same central premise of a prosecutor being given a second chance. The second chances are given through fantastical means