Kamasutra (manga)

Kamasutra (カーマスートラ) is originally a four tankōbon manga created by Go Nagai and Kunio Nagatani published by Tokuma Shoten in 1990-03-31, 1990-06-30, 1990-09-30 and 1990-11-30. It was later adapted into and OVA called Kamasutra: The Ultimate Sex Adventure (究極のSEXアドベンチャー カーマスートラ), known in the USA as Kama Sutra and widely considered a hentai anime.

Story
Yukari Tsuji on a journey to learn the art of Kama Sutra. He enlists the aid of a teacher so he can learn to please his girlfriend, and also desires to become a strong warrior. He learns of a princess who has been trapped by an evil man, and also sets out to rescue her, and learn further from her.