"What is Hentai ..........?" They asked. I was like, "Are you dead serious that you don't know about hentai .... Sis Where have you been?" According to the textbooks, Hentai mean "Change of shape" (transform?), also, "strange or unusual." This word was first born 800 years ago, drawn on from the scripture like those famous freaky paintings in Japan. In the Edo era (1700s), these artworks became a sex instruction...