Usagi (Japanese for “rabbit”) isn’t a real bunny girl—just a minimum-wage employee at a themed café in Akihabara. One night, after a disastrous shift, she stumbles into a strange portal behind her apartment’s vending machine and wakes up aboard the U.S.S. Fluffle , a ramshackle alien vessel.

The gameplay blends three core elements:

The title itself seems to be a mix of Japanese and English, with "Bunny Girl" evoking images of cute, endearing characters often found in anime and manga. The addition of "-39-s" suggests a possessive form, possibly indicating that the bunny girl is the central character. The phrase "Strange Alien Adventure" hints at a science fiction narrative, potentially involving intergalactic travel or encounters with extraterrestrial life.

: Once installed, the game can be played without an active internet connection. Accessibility : Simple controls and easy-to-read menus.

The game features a mix of interactive storytelling, character development, and romantic simulation elements. Players take on the role of Aoi, making choices that influence the story and its multiple endings.

As they journeyed, Bunny Girl discovered that she had a special connection to the crystals, able to sense their presence and harness their power in ways that no one else could. This made her not just a sidekick, but a central figure in the mission to save Zorvan.