8-shaku 8-wa Kerakumeguri: Igyou Kaikitan The Animation
Genres: Supernatural, Hentai
Type: OVA, Episodes: 3
Aired: Nov 25, 2016 to Dec 22, 2017
Studio: Seven
Source: Manga
Rating: Rx - Hentai
Synopsis:
Based on the manga by Jyoka.

A young man caught hitchhiking tells a woman a horrific story.

In it, we find a very young boy who, one afternoon, crossed the path of a woman of unreal greatness. Panicked, he went home and told his grandparents what he had seen.
But this woman was not unknown to them...

(Source: Nautiljon)