Zetsuei Asuka is a supporting character from the anime series s-CRY-ed. He is the Alter of Kazuma's rival, Ryuho, and serves as Ryuho's powerful and loyal companion throughout the series. Zetsuei takes the form of a mechanical, insect-like being capable of transforming and attacking with incredible speed, making him a formidable force in battle. His unique abilities make him essential in Ryuho's fight against other Alters, and he plays an important role in many of the show's intense confrontations.