[Frontier]

This is probably the most "real" the Humagears and their entire conflict within society has felt across the entire show, especially in today's climate, and it's all the more poignant to see it coming at the end with emotions heightened and our hero having lost his path. And he knows this, and doesn't expect he'll ever be the same person again, but he can't break himself away from this path any more than Horobi can, despite the voices on their ear trying to tell them to stop.

Yua got to really step up. Gai's trying to do his part (Williamson is surprisingly on the up and up). Team HIDEN stand by Aruto and the ideals of the company even when all hope seems lost.

We're nearing the end so now's as good as time as any to get one last major interaction between our Main Rider and Secondary Rider, as Fuwa confronts Aruto in the most Fuwa way possible, but you can see how much he wants to get through to him and bring Aruto back to being the guy who helped Fuwa through so much. Also, Naki!

Orthros Vulcan! It's not even really an upgrade, but the emotional resonance of Fuwa and Naki coming together to transform and stop Aruto, even if they don't really stand a chance (but darn it if they don't try) is absolutely palpable. And if anyone could pull off a crazy last-minute form no one would expect, it's Fuwa.

But it was nice to see Zero-Two again just to remind us it still exists even if it got kind of forgotten about in all the Ark-One craziness.

Speaking of last-minute final forms, Ark Horobi! Gotta have our Final Boss getting their Final Form and our two protagonists equal as we head towards the Final Showdown and a dash of Unlimited Zero-One Weapons Works. And with so much hinging on this one fight, even when things seem at their bleakest, we set the stage for the finale of Kamen Rider Zero-One.