Synopsis

Satoru discovers that Hideyuki has a family, a revelation that displeases Tojo considerably. Takeshi seeks out Satoru, first inquiring of Shuichi and then of Shinji. Shuichi locates Room 401, the former workspace of Shiro Kanzaki. Having gained knowledge of the Mirror World's hidden truths, Satoru attempts to kill Reiko. Mitsuru Sano reveals himself as Kamen Rider Imperer, offering his aid as an ally for a price.