Fate is truly as interesting as it is ironic.
~ Izumi's first words to Double

Kyosui Izumi is a flamboyant gay with sadomasochist quirks member of NEVER who serves as Katsumi Daido's right hand man. In Kamen Rider W Forever: A to Z/The Gaia Memories of Fate, he becomes the Luna Dopant.


Izumi is a gay man with sadomasochist quirks and was once a yakuza subordinate until he was betrayed and fatally stabbed in the chest. After he was revived, he fell in love with Katsumi as he was the last thing he saw before his death, tending to call him 'Katsumi-chan' and get jealous of anyone who gets too close to him. Should anyone question Katsumi's motives, Izumi would always stick up for Katsumi and explain his reasons. He would follow Katsumi without question and went on nearly every mission with him.

In the Futo City mission of the retrieval of the 26 T2 Gaia Memories to convert all of Fuuto into Necro-Overs, he gains the T2 Luna Memory, and during his last clash with Kamen Rider Double, he proved to be a resiliant wall, until he fought Kamen Rider OOO and was defeated by the Rider's OOO Bash Scanning Charge, turning into dust instantly.

The Fateful Sengoku Movie Battle

A Luna Dopant created by a big tree was part of a monsters army lead by Nepenthes Inhumanoid appeared to Prevent Wizard, Beast, Gaim, Ryugen, Baron, and Zangetsu from stoping Bujin Gaim from acquiring the ultimate power. He was defeated by OOO Arms's OOO Bash with the Medajalibur along with the Metal Dopant, Hagetaka Yummy, and Sphinx.


Izumi is an expert in grappling and can wrap himself around an opponent's body to snap it like a twig. His main weapon is a whip which he uses to great effect.

Dopant Form

He used T2 Luna Memory to transform. As the Luna Dopant, Izumi gains the ability to create illusions so powerful that they're nearly indistinguishable from reality. His main uses are to create swarms of T2 Masquerade Dopants and extending his whip like arms to any distance in order to attack.

Behind the scenes


Kyosui Izumi is portrayed by former mixed martial artist Genki Sudo. As the Luna Dopant, his suit actor is Yugo Fujii.