Extremely Inappropriate! (Japanese: 不適切にもほどがある!, Hepburn: Futekisetsu ni mo Hodo ga Aru!) is a 2024 Japanese comedy musical drama television series about a man and his friends who time travels back-and-fourth between 1986 (Showa era) and 2024 (Reiwa era), where the man finds that his Shōwa-era way of being conflicts with contemporary Japanese society.^[1][2]

• Sadao Abe as Ichirō Ogawa
• Riisa Naka as Nagisa Inushima, Junko's daughter
• Hayato Isomura as Mutsumi Akitsu (1986) and his son Masahiko
  • Hikomaro as Mutsumi Akitsu (2024)
• Yuumi Kawai as Junko Ogawa, Ichirō's daughter
• Yō Yoshida as Sakae Sakisaka (2024)
  • Otone Maeda as Sakae Sakisaka (1986)
• Manato Sakamoto as Kiyoshi Sakisaka, Sakae's son
• Arata Furuta as Yuzuru Inushima (2024), Nagisa's father
  • Ryo Nishikido as Yuzuru Inushima (1990), Junko's husband
• Yoshihiko Hakamada as the master of a cafe (1986)
  • Baku Numata as the master of a cafe (2024)
• Hiroki Miyake as Masakazu Inoue (2024), Sakae's ex-husband
  • Richi Nakata as Masakazu Inoue (1986)
  • Takehiko Ono as Masakazu Inoue (2054)
• Ayumu Nakajima as Yasumori
• Koji Yamamoto as Kazuya Kurita
• Narushi Ikeda as Kentarō Emo
• Masaki Okada as Naoki
• Norito Yashima as himself
• Yu-ki Matsumura as himself, a popular actor in the 1980s.
• Kyoko Koizumi as herself, one of the top idols of the 1980s.

• Shōwa nostalgia

• Extremely Inappropriate! at IMDb