is an erotic manga series written and illustrated by Toshio Maeda. It was published by Wanimagazine into four volumes from 1988 to 1989 and it was adapted into an original video animation (OVA). Mixing horror, fantasy and comedy, it follows Norizaku and Midori as they find a demonic computer that sends them to Hell and destroy their world. They are transported to a World War II setting and they have to prevent their future to be ruined. In the British release of the anime the alternate name Adventure Duo was used because it was believed parents might buy it for their children by mistake without realizing the explicit sexual content and scenes of tentacle rape. Both the manga and OVA series were licensed in North America by Central Park Media, through its Manga 18 and Anime 18 divisions. The manga was well received for its art style and plot, while the anime was mostly criticized for its poor animation quality. Story Episode 1: A young man named Norikazu finds a computer from World War II buried in his back garden. When he activates it, he and a girl named Midori are transported to Hell where erotic creatures and monsters of different kinds live. They meet some friends including a sexy elf woman named Eganko who falls in love with Norikazu, and a perverted monster prince who is soon enslaved by Midori. With the help of their new friends the pair try to make the dangerous journey back home. Episode 2: Having made their way back home the adventure duo find the world they knew is gone, and is now ruled by the demonic computer which first sent them to Hell. They inexplicably travel back in time to World War II in an attempt to stop the world from being changed. In doing so, they witness the atomic bomb being dropped on Hiroshima, and there is an appearance of the Enola Gay, as well as numerous symbols of Japanese culture at the time. Episode 3: This episode has a humorous love-quadrangle plot in which Eganko comes up with a plan to make Norikazu fall in love with her with a love potion, while simultaneously making Midori fall in love with an egotistical young man from her school. Their plan backfires when the love potions are mixed up and in the end everyone gets what they deserve. Content Mariana Ortega-Brena, writing in