When the Black Cross Army launched an assault on the EAGLE bases in Japan, a force led by Gold Mask attacked the Touhoku base, slaughtering everyone with only Tsuyoshi surviving after watching his brother die. Along with the survivors of the other bases, Tsuyoshi was summoned to Snack Gon, the secret gateway to EAGLE Japan's main command center by Japan's EAGLE Commander Gonpachi Edogawa. There they were given special formfitting electronic battlesuits, which empower its wearer with various superhuman abilities. Edogawa told them that they are the Gorengers, the world's best chance against the forces of the Black Cross Army. Their first battle was with Gold Mask, who they destroyed with the Gorenger Storm.

As Akarenger, Tsuyoshi was team leader of the group and often helped coordinate the group attacks such as the “Gorenger Storm” or “Gorenger Hurricane.”