As Mitsuzane/Zangetsu Shin is about to kill Kouta, Takatora appears and stops him, revealing the two's relationship as brothers to Kouta. Later, the fight of the two brothers begins as Takatora returns as Zangetsu to fight Mitsuzane.
- Upgrade vs. Prototype Fight: Aside from being a Cain and Abel fight, Takatora and Mitsuzane fighting as Zangetsu (an Armored Rider with a Sengoku Driver) and Zangetsu Shin (a New Genesis Rider with a Genesis Driver) is this trope as well.
- Wham Shot: Kaito gets a cut from Redyue, and it's clear that he's been infected by the Helheim virus that the Inves spread, albeit even worse.
