Kamen Rider ZEZTZ

Season 1, Episode 10: Case10: Vanish

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Baku, tasked with the mission "Get back the national secret", infiltrates the home of art collector Atsumi in a dream. A theft occurs involving a famous painting from Atsumi's collection, and Baku suspects state secrets are hidden within that painting. However, as Baku pursues the culprit, Nox appears and warns him, "learning too much could destroy you." The next instant, Baku is struck by a blow from Nox's weapon...!?