Birdy the Mighty: Decode

While pursuing alien criminals named Bacillus and Geega, Birdy and Tute infiltrate Earth under the cover of a rising Japanese idol and her manager. During one night on a routine mission to apprehend the said criminal, a civilian named Tsutomu Senkawa is used as a human shield. When Birdy realized that she killed him in an accident, she decided that the only way to save his life was to fuse her body with his in order to prevent him from dying. Tsutomu thought that it was all a dream until he found that he was unable to control his body one night after he was supposedly dead.

Birdy is informed of a break-out from an intergalactic prison, and manages to track down one of the rogue prisoners. Although she is ordered to apprehend the criminals alive, he was killed by the time she arrived on the scene. The only clue is a disguise chip, which dissolved the body.