Federation investigator Birdy chases the space criminal Geega through space to Earth, where he hides in the entertainment industry under a human disguise. Birdy goes undercover herself, posing as famous model “Arita Shion” that often uses a ‘space girl’ look. A male student, Senkawa, stumbles upon a fight between the two one night in an abandoned building only to be severed in half as he is used as a shield by Geega against Birdy. Birdy heals him from imminent death in some fashion- but Senkawas body, and life, are now changed and permanently linked to Birdy.
Tetsuwan Birdy Decode got the usual sci-fi stuff (like a bizarre Terminator thing that looks like Ghost in the Shells "Makoto")
the plot will be hard to under stand, but the plot of this is ok. Even if it dose fill in a few gaps.
Action bits are what made Birdy good to watch. Sadly in this they aren't as its all stuff a fan would have already seen. All in all it's a good watch.