In order to defeat the orphnoch, Kusaka Masato need to transformed into Kamen Rider Kaixa by dial the number of 9-1-3 then click enter and insert the kaixaphone into the kaixa driver.
Kaixa using the smart brain technology as its main device, like 913-camera to give a punch into enemy,913-blaygun to cut the enemy off and 913 binocular which one of Kamen Rider Kaixa main finisher or can be called as Kaixa's Rider Kick.
As the secondary rider of Kamen Rider 555 series, Kaixa have a big impact on the series and to the next series after it.
Kamen Rider Kaixa cosplay by @Chambaracosplay