My Grandfather, the Master Detective

Director

• 
  Murao Yoshiaki
• 
  Katayama Osamu

Main Role

• 
  Yoshikawa Ai

  Takahashi Kaede | Takahashi Kanae (Ep. 3-4)

  Main Role
• 
  Okuda Eiji

  "Madobuki teacher" / "Himonya"

  Main Role

Support Role

• 
  Tsuna Keito

  Naruse Shiki

  Support Role
• 
  Takamatsu Aloha

  Iwata Issei / "Iwacchan"

  Support Role
• 
  Tsunematsu Yuri

  Misaki

  Support Role
• 
  Yoshizawa Hisashi

  Agatsuma

  Support Role
• 
  Sakamoto Manato

  Kobayashi

  Support Role
• 
  Ohtsuki Takehiro

  Jonouchi / "Jo"

  Support Role
• 
  Asai Daichi

  Kunieda / "Soft cream-ya"

  Support Role
• 
  Katsumura Masanobu

  Kuki / "Oyabaka"

  Support Role
• 
  Minemura Rie

  Yamamura / "Okappa"

  Support Role

Guest Role

• 
  Sagara Koujin

  "V" (Ep. 1)

  Guest Role
• 
  Watabe Ryuhei

  "Clyde" (Ep. 1)

  Guest Role
• 
  Noda Yuzuki

  Daisuke (Ep. 1)

  Guest Role
• 
  Satsukawa Aimi

  "Bonnie" (Ep. 1)

  Guest Role
• 
  Narita Sara

  [Waitress] (Ep. 1)

  Guest Role
• 
  Suzuki Mika

  [Setogawa Takeshi fan's wife] (Ep. 1)

  Guest Role
• 
  Abe Oto

  "Madonna teacher" (Ep. 2)

  Guest Role
• 
  Takeda Rena

  "Madobuki teacher" [2nd Generation] (Ep. 2)

  Guest Role
• 
  Toman

  [Red-haired Aokona Theater Troupe member] (Ep. 2, 7)

  Guest Role
• 
  Okamura Makisuke

  [Kakigori truck owner] (Ep. 2)

  Guest Role
• 
  Shimizu Nagisa

  [Swimming class student] (Ep. 2)

  Guest Role
• 
  Kurokawa Tomoka

  "Komae" (Ep. 3)

  Guest Role
• 
  Oguma Tatsuki

  [Runner] (Ep. 3)

  Guest Role
• 
  Fukasawa Emi

  [Dog owner] (Ep. 3)

  Guest Role
• 
  Matsuki Kenya

  [Detention Management Officer] (Ep. 3)

  Guest Role
• 
  Ishino Mako

  "Suzu" (Ep. 5)

  Guest Role
• 
  Yamada Meikyo

  [Kobayashi's grandfather] (Ep. 5)

  Guest Role
• 
  Oshima Yoko

  Keiko (Ep. 5, 8)

  Guest Role
• 
  Onodera Zuru

  Hibari (Ep. 5, 8)

  Guest Role
• 
  Oomizu Yousuke

  Nekota (Ep. 6)

  Guest Role
• 
  Yasuda Seri

  Takahashi Kaede [Child] (Ep. 6)

  Guest Role
• 
  Yabe Hiroyuki

  [Police officer] (Ep. 6)

  Guest Role
• 
  Setoguchi Yoshiyuki

  [Police officer] (Ep. 6)

  Guest Role
• 
  Morobayashi Mei

  [Kaede's student] (Ep. 6)

  Guest Role
• 
  Hiiragi Rumi

  [Agatsuma's Wife] (Ep. 6)

  Guest Role
• 
  Okamura Takashi

  [Nekota's neighbor] (Ep. 6)

  Guest Role
• 
  Higuchi Hina

  Hanashima (Ep. 7)

  Guest Role
• 
  Matsuo Satoru

  Nomuro Reon (Ep. 7)

  Guest Role
• 
  Sakurai Hijiri

  [Doctor] (Ep. 7)

  Guest Role
• 
  Suma Kazuya

  [Reon's father] (Ep. 7)

  Guest Role
• 
  Young Dais

  Isogai (Ep. 7-8)

  Guest Role
• 
  Fuse Yuuya

  [Detective] (Ep. 7-8)

  Guest Role
• 
  Komaki Mako

  Nagai Yuki (Ep. 8)

  Guest Role
• 
  Tsumura Noriyoshi

  [Doctor] (Ep. 8)

  Guest Role