Watch Kamen Rider Season 23 Episode 51 Online
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- COUNTRIES: Japan
- Subtitles: 日本語
With Gremlin in possession of the Philosopher's Stone, Koyomi dies. However, Fueki says that the light in Haruto's heart is the true Philosopher's Stone. Meanwhile, Gremlin, now evolved, goes on a rampage, and Kosuke cannot battle to save anyone or even himself from the monstrous Phantom.