Capricorn

Taku Shimamura, a high school student, is suddenly transported to the strange world of Slaffleaze, where intelligent beings rule and the antagonist Zolba is planning an invasion of Earth, which they call Capricorn. Taku allies with the Slaffleaze peasants to prevent Zolba's forces from opening a path to Earth. To succeed, he must earn the trust and affection of the last Yappie, the ancestral protectors of Slaffleaze. The final Yappie is a young woman who is also a dragon, requiring Taku to demonstrate more than just bravery to gain her support.