ヤマトタケル
Dragon Knight (ドラゴンナイト) is an eroge/role-playing video game series by the game company ELF. There are four "Dragon Knight" games released between 1989 and 1997. There is also a hentai OVA series based on it, as well as some other media including audio CDs, novels and comic books. "Dragon Knight" is set in a sword and sorcery setting and mostly tell the story of Yamato Takeru (no relation with the historical figure of Yamato Takeru), a wayward young swordsman dedicated to saving damsels and fighting evil.