MY-TH’s second episode expands the conflict by introducing Kamen Rider Datt, a Rabbit-themed Rider who interrupts Sora’s fight against a Fukashigi. Meanwhile, Tatsuomi Asao investigates Sora while secretly working for the Zodiac Alliance. The episode makes it clear that Sora’s greatest challenge may not simply be defeating monsters, but understanding the motives of other people who possess Rider powers.

BLACK’s second episode, The Mutant Party, continues the early struggle against Gorgom and its monstrous agents. The original series builds its atmosphere around a secret organization that uses mutated beings to advance its plans. Kotaro’s encounters with these enemies reinforce the fact that he is opposing a much larger operation, rather than dealing with unrelated monsters appearing by chance.

Both episodes expand the world beyond the main hero’s first transformation. However, MY-TH introduces uncertainty about which Riders can be trusted, while BLACK emphasizes the scale of the enemy organization. The newer show builds a more complicated network of competing Riders; the older one concentrates on the struggle of an individual hero against a powerful conspiracy. That difference gives MY-TH more room for shifting alliances, while BLACK gains much of its early tension from Kotaro’s isolation.