Ojīchan wa Shōnen Tantei

Ojīchan wa Shōnen Tantei (おじいちゃんは少年探偵) is a Japanese manga series written and illustrated by Inoue Yoshihisa.

Characters

 * Dash (少年 ダツシュ)
 * Hikari Yokoyama (横山 ひかり)
 * Dr.Skull
 * Fumie (フミエ)

おじいちゃんは少年探偵