The now legendary true life story about an Japanese otaku who courted a girl on his commuter train, Densha Otoko(or "Train Man"), has become a phenomenon in Japan. It's been turned into a book, four different mangas, a live-action movie, and a live-action TV series. The TV series featured an animated opening by Gainax homaging their original Daicon animated opening with a bunnygirl riding on space trains(i.e. Galaxy Express 999). The opening was so popular that is spawned off its own anime series, Getsumento Heiki Mina. In it(which was the "show within the show" on Densha Otoko), a group of futuristic enforcers called the Rabbit Force keep the peace between feuding planets with a team of rabbit-themed Power Rangers.