18+ ( ADULT CONTENT) Ecchi-Sexual Intercourse:- Normally, there is no sex in manga or anime which are considered ecchi. Such works are known as hentai, a form of animated pornography. But it is still possible to make a pun on sexual intercourse through misunderstandings. One simple example would be two characters searching for some kind of item, which appears from the outside, only showing the silhouette, as if both would have an actual intercourse.