Vanish! ~Oppai no Kieta Oukoku~

Kenzou is sent to the neighboring kingdom of Rochetoir to study magic. But his dreams of erotic adventure crash and burn when, at the entrance ceremony, he blurts out, "I want to use magic to sleep with girls." Instantly reviled by every woman in the country, his lecherous ambitions seem doomed. Then, Rene introduces him to Roco, a legendary witch girl currently banned from using magic for her past misdeeds. Skeptical but desperate, Kenzou decides to seek her out...