Kamen Rider Ryuki
In "Kamen Rider Zi-O" and its "Rider Time: Kamen Rider Ryuki" side story, Shinji developed a fear of mirrors when his grudge towards the ORE Journal's clients for not supporting his former workplace created Mirror Shinji and attempted to end his life before Kamen Rider Zi-O helped him accepts his other self and finally move on. Soon after, Shinji ends up being drafted into a new Rider War while slowly regaining his memories as he wins the Rider War and fights Another Ryuki before leaving him to Zi-O and Geiz while honoring Ren's final request to check on Eri.