9-nine- Episode 4 is the fourth volume in a series of supernatural mystery games, with Episode 4 telling a story centered around Noa Yuuki. The entries in the the 9-nine- series share the same setting and world, but each entry focuses on a different heroine. The villainous mastermind is revealed, friends are at odds, the mystery of the Artifacts uncovered, and bonds are tightened through mutual trust. What lies in store for this young man and woman with the power of justice at their fingertips in this installment? ...

In a world of prudes, a single woman makes her husband stand erect against the status quo and face the world with balls of steel. Horne Doug is a normal, limp everyday man with an unfortunate name, but his life is turned upside down when he meets his wife, Horne Rikky. On the surface, she may look like the sweetest of wives, but beneath lies a hungry beast ready to devour her husband’s love stick. Will Doug stand firm for the occasion or crumble under the weight of his wife’s apple bottom?

This is the story of a man finding his own way in a cold, impotent world, wrung out of his shell by the hand of his loving and supportive wife. Will he learn to accept his true, horny nature, or die greasing the pipe? Find out this and more by sticking your meat deep into the universe of the World’s Horniest Housewife, Horne Rikky! ...

Focuses on the loving and sensual relationship between our protagonist and his wife, Ako. Enjoy a utopian, healing bond as they spend their days off together, free from societal pressures in each other's company. ...

Gotou Hajime, has enrolled in Penile University, majoring in perversion, in order to study and deepen his understanding of the art, and eventually carry out research on the subject.

Due to Hajime’s chosen field of study, he has registered to live with the Maezono family – a family whose mother is the legendary pervert that prevented World War 3 with her sexual diplomacy! ...

Conquer the haughty demon lord Lucifer, and turned her into an impregnated cum dump servant!

The ...

The Oosaki family has welcomed several homestay students and now, they are going to accept a long-term one. When the student comes however, it's a tall and muscular man. But in contrast with his scary appearance, he seems to be a polite and earnest person.

Suddenly, the husband is called to go on a business trip​, leaving his wife, daughter and the young man alone at home. Meanwhile, the man's sexual urges gradually increase and then finally... ...