Kizoku Tantei (2017)

Both are about a family of detectives. A great balance of comedy, quirkiness and family drama.

About eccentric detectives solving eccentric cases. Filled with weird and wacky characters. Fun and simple.

They are the same of being from a rich family and playing detectives as a hobby

Both dramas have some comedy mixed with some mystery in the story. Both dramas have an annoying-rich-asshole of a male main character and an uncompetent-naive-too conscientious female character.

another drama where it's a detective like sherlock holmes characterm with a "helper" character who goes about solving various mysteries and crimes. Although Kizoku tantei is slight different in a way (I would say how specifically, but it would be a spoiler so I won't), they are still very similar and I believe if you like one, you'll more than likely like the other as well.