Nageki no Kenkou Yuuryouji

嘆きの健康優良児

Hiroe Ogawa is a healthy, normal girl with an extraordinary, private dilemma. Hiroe is unable to reach sexual climax under any circumstances. Over Hiroe's objections, older housemate Mayaka and landlady Yayoi use a variety of sexual techniques, appendages, and even hypnotism in order to help Hiroe achieve her elusive goal. (Source: Anime News Network)