Despite becoming the winner by default, Shiro reverses the Rider War, leading to Ren becoming a full-time employee at the Atori coffee shop while Eri is revived in the new timeline.

Ultimately, Ren faces the last participant, Kamen Rider Odin, in combat until Shiro's sister Yui dies, causing Odin to fade away. Despite initial reluctance, he befriends Shinji Kido and fights alongside him to stop Mirror Monsters and malicious Rider War competitors until Shinji gives his life saving civilians.

Sometime prior to the series, he joined Shiro Kanzaki's Rider War to revive his fiancé, Eri Ogawa, who fell into a coma following an encounter with the bat-like Mirror Monster Darkwing ( ダークウイング, Dākuuingu), who he formed a contract with to become Kamen Rider Knight ( 仮面ライダーナイト, Kamen Raidā Naito). Ren Akiyama ( 秋山蓮, Akiyama Ren) is a cold loner who fights constantly and is frequently unemployed. Shinji Kido is portrayed by Takamasa Suga ( 須賀貴匡, Suga Takamasa). In this form, he wields the Drag Visor Zwei ( ドラグバイザーツバイ, Doragu Baizā Tsubai ) firearm, which can convert into the Drag Blade ( ドラグブレード, Doragu Burēdo) sword and allow him to perform the Dragon Fire Storm ( ドラゴンファイヤーストーム, Doragon Faiyā Sutōmu) finisher alongside Dragranzer. With the Survive Rekka ( サバイブ烈火, Sabaibu Rekka, Survive Raging Fire) card, he can transform further into Kamen Rider Ryuki Survive ( 仮面ライダー龍騎サバイブ, Kamen Raidā Ryūki Sabaibu) and evolve Dragreder into Dragranzer ( ドラグランザー, Doraguranzā), giving it the ability to transform into a motorcycle. In combat, Shinji possesses the Drag Visor ( ドラグバイザー, Doragu Baizā) gauntlet, which allows him to summon Dragreder, the Drag Saber ( ドラグセイバー, Doragu Seibā), the Drag Claw ( ドラグクロー, Doragu Kurō) gauntlet, and the twin Drag Shields ( ドラグシールド, Doragu Shīrudo) as well as perform the Dragon Rider Kick ( ドラゴンライダーキック, Doragon Raidā Kikku) finisher with the appropriate Advent Cards. By the series finale, he dies protecting civilians from a pack of Mirror Monsters, but Shiro reverses the Rider War's events, resurrecting its participants and allowing them to resume their normal lives.

Despite being told to stay out of the Rider War by Ren Akiyama, Shinji chooses to join anyway to stop the other Mirror Monsters from devouring people and stop the Rider War, forming a contract with Dragreder and becoming Kamen Rider Ryuki in the process. Shinji Kido ( 城戸真司, Kido Shinji ) is a kind-hearted, friendly, simple, and naive idealist who works at the ORE Journal as a journalist trainee until he finds one of Shiro Kanzaki's Card Decks, encounters the Asian dragon-like Mirror Monster Dragreder ( ドラグレッダー, Doragureddā), and stumbles into the Mirror World while investigating Koichi Sakakibara's disappearance.

Metal sonic mugen stage