* Based on a shounen manga by Yuuki Masami, serialised in Shounen Sunday.
Federation investigator Birdy chases the space criminal Giga through space to Earth, where he hides in the entertainment industry disguises as a human. Birdy goes undercover herself, posing as famous model Arita Shion that often uses a space-girl look. One night a male student, Senkawa Tsutomu, stumbles into a fight between the two in an abandoned building only to be severed in half when Giga uses him as a human shield against Birdy. Birdy saves Tsutomu from imminent death but his body, and life, are now changed and permanently linked to Birdy.