- Kabuto: "Facing the shadows, slicing the shadows…"
- Kuwaga: "Facing the light, slicing the light!"
- "Lightning Speed Gouraiger revealed!"
Lightning Speed Gouraiger (電光石火ゴウライジャー, Denkōsekka Gōraijā) (1, 5, 7-51) were originally the enemies of the Hurricaneger who join Jakanja despite having wiped out the Ikazuchi Way's Ninja Academy which left the Kasumi brothers as the only survivors. After their redemption, they are the supporting characters of Ninpu Sentai Hurricanger.
The brothers obtained the forbidden Gouraiger system from their father, Ikki Kasumi, a rogue ninja who abused them. Ikki went against the Ikazuchi Way's wishes to obtain the Evil Will after learning of it during his mission in Egypt and learned of the "Final Secret" at the time of a meteor shower. He went against his school's wishes by creating the Gouraiger system and making his sons kill each other to evoke it while making them believe that rage and hatred would only promote strength. To help evoke it they form an alliance with the Jakanja to use their father's method for that purpose unaware that one brother must kill the other for that to happen. After Ikkou found out the truth, he initially wanted Isshu to kill him so his younger brother could live, but in the end the Gouraigers abandoned their fathers mad quest and as a result their alliance with Jakanja is also terminated as well now that they are no longer useful to them. Though they allied themselves with the Hurricanegers the Kasumi brothers were unable to completely forsake their father's cruel teachings and have a jaded view on life. The two work as construction workers. They represent the Ikazuchi Heart embodying the Bonds of the Past.
Years later, the Gouraiger duo fought alongside not only their old comrades, the Hurricanegers and Shurikenger, but all 34 Sentai teams, against the Empire of Zangyack when it attacked the Earth in the Great Legend War. After fighting against hundreds of Gormin and their Zgormin commanders. Akarenger noticed the fleet moving towards them, he gathered all the Rangers together and gave them the order to sacrifice their powers to wipe out the first invasion's armada. The Rangers' powers were then harnessed in keys that came into the possession of the Kaizoku Sentai Gokaiger. When the Gokaigers turn into the Hurricangers, Don (Gokai Green) and Ahim (Gokai Pink) turn into the Gouraigers.
10 Years After
10 years after their debut, Ikkou has joined a band called JUNrestu. Isshuu doesn't appriciate the music and finds it hard to get excited over.