Tentacle and Witches

Based on the erotic game by Lilith Mist. Tachibana Ichirou, is an ordinary student; however he knows a secret. That his teacher, Yoshiko is the owner of the mansion on the hill, and she is in fact a witch! One evening, he goes to the mansion to see her using the magic... (Source: DLsite English)

Mugoku no Kuni no Alice

Based on the erotic doujin game by Tsukkii no Ochakai (つっきーのお茶会). Alice is an ordinary girl who is a little timid and loves her big sister. When she finds herself separated from her sister in a strange room, Alice is in a lot of trouble. She is so lonely being in a strange place all by herself. "What should I do... onee-chan..."</i> But Alice gathered up all her courage and tried her best to leave her room to look for her sister. But be careful. That room is very dangerous. It is full of strange and scary creatures and traps that can kill her. If she makes a mistake, she will never see her sister again. But if she doesn't have the courage to try, she won't be able to solve the mystery. Will Alice be able to find her sister safely? When she wakes up, there is a white rabbit... A white fluid was poured into her body. (Source: Getchu, translated)

Jet-Black Shaga THE ANIMATION

Based on an original story by Seven. Shaga the Monster who has lived for 300 years in the forest with other monsters. Now try for a new life by traveling with a young man who was asked by the Mother of the youth to keep her son in escorting to Osshu. They started the journey and met with a variety of monsters. (Source: Nekopoi)

Soredemo Tsuma wo Aishiteru

Based on erotic game by Lune Team Bitters. Nanami is happily married. While using a public bathroom, she is caught on camera by the building manager, Kamata. Using the video footage as blackmail, Kamata now has complete control over her, and Nanami soon finds herself enjoying the sexual acts she is being forced into.