Yôzaburô Kanari

Kindaichi Hajime may look dumb, but he is one of the smartest you will ever see. He encounters mysteries after mysteries with his good friend, Miyuki, and he swears to solve them in the name of his grandfather, who was a great detective. (myanimelist.net)

A young man, Kindaichi performs poorly in study but he has IQ 180. He constantly meet a murder case, so using his 180 IQ, he solves murder cases. (mydramalist.com)

Kindaichi is off on yet another case, this time in Shanghai. When the father of a Chinese friend of the youngKindaichi is murdered at the circus, it is up to the ever-resourceful and clever young high-school detective to solve the case. But hidden in the background is the 4000 year-old legend of the Shanghai Mermaid. (mydramalist.com)

Hajime finds it difficult to graduate to the next grade at school. His friend Miyuki tells Hajime to study at a private school which is famous for its strictness. At that school, Hajime uncovers a death caused by non-natural reasons. He's challenged by a genius crime producer. ~~ Based on the manga series "Kindaichi Shonen no Jikenbo Gokumon Juku Satsujin Jiken" by Seimaru Amagi and Fumiya Sato. (mydramalist.com)

Spinoff from famous fictional Japanese detective Kindaichi with a purported school age grandson. 27 eps approx 50 minutes long. (Me) S3 ep 1 The Young Kindaichi is back and better than ever! In this first of many cases, Kindaichi finds himself onboard a cruise ship in which the captain mysteriously disappears the day after a big party. it's up to Kindaichi and friends to find the killer - and stay alive! Dramawiki)