Disclaimer: I didn’t work on this, another translator in the group did. I’m just as confused as you are by this.
Anyways, “Glass no Kamen Desu ga the Movie: Onna Spy no Koi! Murasaki no Bara wa Kiken na Kaori!?” aka “It’s Glass Mask But… the Movie: Female Spy’s Love! The Purple Rose Has a Dangerous Scent!?” is a parody of the very long running (started in 1976 and 49 volumes released so far) shojo manga Glass Mask, so enjoy hilariously ropey flash animation and convoluted plots. Oh and robots. There’s two female protagonists so you can guess what robot gets parodied.
The whole thing with the rabbits is a reference to folklore about a rabbit on the moon.