Kamen Rider Build, Episode 47: "Subzero Flame"

[Toku Prime]

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This week: well we knew it wasn't going to be a happy one. If you need cheering up, LuPat have lots of wacky hi-jinks this week to compensate.

The Rogues unite, Kazumi decides to try purifying the Castle Lost Bottle within his own body, Nariaki is revealed to be the first genuine cyborg Rider in years, Gentoku has to watch as yet another person gets stabbed by Evolt's finishing move in order to save him, Kazumi hands over the Lost Bottle along with four dog tags, and Misora's actress cries every molecule of water out of her body.