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Amami Tomonaga (友永 亜真美, Tomonaga Amami) is a character in the Brave Police J-Decker series. She is the wife of Yuuichirou Tomonaga and the mother of Azuki Tomonaga, Kurumi Tomonaga and Yuuta Tomonaga.


Along with Yuuichirou Tomonaga, Amami works as an archaeologist for the Japanese government and often accompanies him on expeditions. This causes all three children to be left at home alone with Azuki Tomonaga in charge for extended periods of time.

Amami and her husband traveled back to Japan to visit their family after an expedition to Hedro Island in the south. She and her husband spent a lot of time with their family while at home, since they would be leaving for another expedition soon, which left Deckerd feeling jealous and left out. After he disappeared when attempting to follow up on a case by himself, she joined the rest of her family in the search for him, and then proceeded to defend him from the criminals attempting to destroy him, claiming Deckerd as a member of the Tomonaga family.


  • The name Amami means "second, Asia" (亜) (a), "real, genuine" (真) (ma) and "beautiful" (美) (mi).
  • Amami's surname Tomonaga means "friend, companion, pal" (友) (tomo) and "eternal" (永) (naga).
Brave Police J Decker Characters
Brave Police Robots
Deckerd ( J-Decker / Fire J-Decker ) · Duke ( Duke Fire )
McCrane ( Build Tiger / Super Build Tiger ) · Power Joe · Dumpson · Drill Boy
Gun Max · Shadow Maru · Kagerou ( in Brave Saga series and Brave Wars )
Main Characters
Yuuta Tomonaga · Ayako Kimizuka · Regina Argine · Seia Onoue · Kurumi Tomonaga · Azuki Tomonaga · Juuzo Saejima · Shunsuke Toudou
Other Characters
Iwaki Reiko · Fay · Kazuto Azuma · Masaya Kashiwazaki · Masaki Kitagawa · Kikumaro Takano · Onoue Makoto · Takeuchi Hitoshi · Yuuichirou Tomonaga · Amami Tomonaga · Kapia · Emiri Aihara
Main Villians
Victim O'Rand · Ken Shinjo · Red Chieftain · Blue Chieftain · Black Chieftain · Armored Chieftain · Neuva Fahrzeug · Eva Fahrzeug · Gaizonite
Other Criminals
Older Bubble Gum Sister · Younger Bubble Gum Sister · Sister Nanase · Dr. Gauss · Noriyasu Cato · Yoshiki Kikaida · Yoshito Kikaida · Inti · Kirisak · Dr. Adolf Madoh · Abyss Guard · Satan J-Decker