- main characters become younger and fulfil their dream
- old school music vs modern music related
- characters songs in the story is available on spotify (liver and gallbladder & J2)

spoiler:
- love triangle between main character, main character's son and main female lead

Similar slice-of-life feels and romance
Romance is slow, steady and understanding (super cute)
Very cute and slightly immature/childish male adults with mature, empathetic and tsundere-like female leads

Both dramas have the body-swap/body possession concept.
The original character found a clue that lead them to solve the mystery/case but before they were able to reveal it, they had an accident which caused them to die/their body to be possessed by someone else. The characters that possess the body aim to use their new identity as a detective to get away with certain things such as handling a gun, or accessing police data.

Both dramas have the body-swap/body possession supernatural concept. The characters try to approach people around their original lives, but as they are in another body, those people don't recognise them and they get ridiculed for being weird or having mental problems.