Both are Japanese dramas with the found family trait
- reluctant family which grows on each other
- adorable children
- kazoku boshu shimasu is bit on the serious side
- kataru lives alone is a comedy

Both have found family trope
The leads are secretly family.
In bitter blood the leads are estranged father and son
Where as in k2 the leads are step brothers
Both are cop comedies
Both have one case that needs to be solved for us to know what happened in their past.

Both have the lookalike takes the place of the original one trope.
But are you human too? Has a robot
and I imagine your honor has his twin brother

— Both male leads are super smart.
— Both female leads are strong and good at their job.
— Both dramas revolve around crime and law.
— Both have funny moments that will have you laughing out loud.
— I would recommend giving hello monster a try even if you are scaptical, that drama will surprise you by how smart and well directed and acted it is.

They are both set in a korean prosecutor office. Both focus on crime. WYWS can be a little on the fantasy side though .