Dark Shinji then reveals he is Kamen Rider Ryuga and attacks Miho, who transforms into Kamen Rider Femme to fight back. Dark Shinji would later take the real Shinji's place on a date, but Miho eventually realized he was a fake. Kappei Yamaguchi , Satsuki Yukino Fantasy anime Kamen Rider Ryuki : Episode Final Kinnikuman Nisei : Muscle Carrot.As Ryuga, Dark Shinji saved Miho from Kamen Rider Ouja and convinces her that he was the real Shinji.

Though in his case, more like Rentaro Kagura (as Another Shinobi), Dark Shinji's Another Rider form is based on the same one he transforms into. Dark Shinji is the second veteran Rider to become a Kaijin Rider after Kuroto Dan as Another OOO. Like other Mirror Riders, Dark Shinji died an ironic death in Kamen Rider Ryuki: Declaring himself the strongest Rider and also the 'real' Shinji after manipulating Shinji into being possessed by him, only to die to the real Shinji because he didn't expect him to be so strong. Ryuga also return as his original Kamen Rider-self, now can also possess the real Shinji’s body. With a new resolve, Sougo accepting his darker mirror-self into awakening as Zi-O II, and Shinji is ready to accept his as well to move on, once his dark mirror counterpart is defeated in his Another Rider form.Ever since Another Ryuga’s appearance, Another Ryuki began to resurface, and it did not negate Shinji into returning to Ryuki due to the previous interferences caused by Kamen Rider Odin. As Shinji unintentionally let Ryuga begin manifest himself and turned into Another Rider version of his Kamen Rider form, Shinji began live in recluse, closing all reflections across his apartment in attempt to commit a suicide by breathing a carbon poisoning monoxide to make sure Ryuga never terrorize many civilians who are thought to be one of the viewers who caused ORE Journal’s defunct, until Sougo and his friends arrived on time to prevent Shinji’s suicide attempt.

If the cameo appearances of every major Kamen Riders in OOO, Den-O, All Riders: Let's Go Kamen Riders doesn't count, Dark Shinji is the only film-exclusive and non-canoncial Kamen Rider from the first half of Heisei Riders who returns in a canoncial installment from Heisei Era Riders' second half.

Kamen Rider Ryuki 2002