As the Lockseed gathering "game" begins, Baron and Bravo fight between themselves, while the white Armored Rider, Kamen Rider Zangetsu, investigates the infiltration into Helheim Forest. Meanwhile, Kouta, who has also entered the forest, decides to track down the white Rider and finds the base of operations that may be the cause for the tears into Helheim Forest opening on their own.
- Distracted by the Sexy: Bravo is easily defeated by Zangetsu after he drops his weapons and begins swooning over his opponent.
- Dressing as the Enemy: Kouta finds Yggdrasill's base camp within Helheim and puts on a spare hazmat suit so he can go into the tents to gather information.
- Foreshadowing: Hase remarks that he's not going to be some mook. The very next episode shows that the Kurokage powerset has been given to Mooks.
- Gaussian Girl: Bravo gets this effect when he sees Zangetsu of all people.
- The Worf Effect: Zangetsu makes Bravo look like a fool, justified because he understands the Sengoku Driver's functions completely while Bravo is learning as he goes. Also because Bravo was busy swooning over Zangetsu at the time.
- Vagueness Is Coming: Kouta's speech at the end of the episode gives off this vibe.Kouta: Looking back on it, that was when the gears were starting to turn. But... we really didn't realize anything at all. We didn't know that our fates were already written in stone. We just wanted the power to reach our dreams, we thought that would help us grow up. That's what we all believed, at least. But... you can't wish yourself into growing up. You grow up when you can't be a child anymore... In the endless war that has yet to come... we would discover that for ourselves...
- Villainous Rescue: Taketora’s scientist uses Yggdrasil Tower’s cannons to help Gaim fight the Inves. It’s less out of any desire to help him, but more to ensure he doesn’t lose a vital piece of equipment (the Sengoku Driver).
- Villains Want Mercy: When the Yggdrasill camp is being overrun by Inves, one of the scientists begs Kouta for help despite laughing and talking about how the Beat Riders are just guinea pigs before. Kouta calls him out on being a Hypocrite, but still helps save the day.
