Satoru finds out that Hideyuki has his own family, much to the dissatisfaction of Tojo himself.

Takeshi attempts to find Satoru by asking Shuichi, and later Shinji.

Shuichi finds Room 401, the room where Shiro Kanzaki worked.

Having learned the secrets about the Mirror World, Satoru attempts to kill Reiko.

Mitsuru Sano reveals himself to everyone as Kamen Rider Imperer, offering his services as an ally for cash.

Shinji realises that Yui is fading but doesn't believe it at first. However, Yui realizes it herself later and begins to panic, and she calls Ren to pick her up.

ORE Journal is seized due to the failure of the Mirror Monster scoop. However, Chief Editor tells Shinji that as long as his PC is in hands, the ORE Journal will continue to exist.

A child version of Yui appears inside the mirror, and warns present Yui that on her 20th birthday, she'll disappear.

Reiko orders Nanako and Megumi to spy on Shuichi.

Asakura tells Tojo that he was really the one that killed Mitsuru.

One of the Sheerghosts begins to multiply, creating thousands of them.

Shinji learns that the Rider War was created to save Yui.

Satoru challenges the other Riders to a battle. Later, he douses their cars with gasoline to stop them from leaving Mirror World.

Takeshi seemingly dies in an explosion after igniting a gasoline-covered car.

Satoru sacrifices himself by jumping in front of a truck to save a boy and his father.

Shinji made his final decision to fight Ren for Yui's sake.

On two separate occasions, Shinji is unable to destroy Ren even though he had found a reason to fight until his hesitation forces him to refuse to fight.

Shinji had to pretend to be cheerful, much to Ren and Yui's concern over Shinji's sudden overacting of joyfulness.

Shuichi collapses from his illness.

Reiko returns from New York with the documents which contain the information about Shiro Kanzaki.

A savage Destwilder is slain by Shinji and Ren after killing a couple.

Continuing from the previous battle, Shinji fights Ren once again.

The multiplying Sheerghosts curl into a pool and later hatch into Raydragoons.

Shiro tells the remaining Riders to finish the battle in three days. Otherwise, no one will get their wish.

Shuichi has in fact not died and is recovering in hospital.

Yui tries to jump off of a high building to stop the Rider War but Shiro prevents her.

Reiko and Chief Editor trying to solve mystery about Mirror World and Kamen Riders.

Reiko discovers that Shinji is a Kamen Rider.

This episodes marks the revelation of the Mirror World and Shinji's identity as a Rider to Reiko, as well as Yui's final appearance.