Kyoushoku Soukou Guyver, often known simply as 'Guyver,' is a classic anime series that chronicles the story of Sho Fukamachi, a high school student who stumbles upon an alien device called the Guyver Unit. This device transforms him into a bio-boosted armor-clad warrior. The series explores themes of alien technology, corporate conspiracy, and the struggle for identity. It has been praised for its intense action sequences and dark narrative.