Zaia comes from Kamen Rider Zero-One, the 2019 tokusatsu series where Zaia Enterprise rivals Hiden Intelligence and supplies its own drivers and Progrise Keys. Henshin is the classic Japanese word for transform, shouted or triggered across the Kamen Rider franchise before a hero changes into armor. This short version circulates among fans as a quick soundboard clip, shared for edits, roleplay and transformation memes. Its corporate announcer style makes it instantly recognizable to Zero-One viewers, even without any picture on screen.