After Hiden Intelligence's CEO Korenosuke Hiden passed away and willed the company to his grandson, Aruto Hiden, Izu went to visit Aruto to bring him to the company so they could read out his late grandfather's will. After MetsubouJinrai.NET began their attacks by hacking a HumaGear to turn into a rogue Magia, Izu delivered the 01 Driver to Aruto for him to use to fight the Magia and defend humanity.
After Satellite Zea was taken over by the Ark, it backed itself up inside Izu and used her to create the Zero-Two Driver for Aruto to use.
She was later tragically killed by Horobi during his assault against the city.
Kamen Rider X
Kamen Rider Amazon
Kamen Rider Super-1
Kamen Rider ZX
Kamen Rider Black/RX
Kamen Rider Kuuga