Kizoku Tantei (2017)

Similars

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.
Legal High

8.1 2012

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.
Detective L

8.2 2019

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.