Overflow

"Brother, are we really taking a bath together?" And so, a forbidden bathing experience began. Me, my sister, and childhood friend—one man and two women—are sharing one bath. After involuntarily "overflowing," the sister's secret love come out?! This is a young romantic comedy that won't let you say, "it's over!" (Source: Official Site)

Kateikyoushi x Saimin 2 The Animation

Based on the erotic game by POISON. The tutors of the main character, Masato, are "the sexually vicious sisters" he had known since childhood! Haruna Shinjo, the celebrity older sister, combines brains, a fine pair of eyebrows, and the worst kind of personality. Serina Shinjo, a college student with a selfish personality and body, is full of gaps. He is constantly mistreated by both of them, and is already fed up with his life. Then one day, Masato meets Sakiko Ichinose, the owner of the secret club "Gentildonna" and is handed a hypnosis device. Using the device, he is told that he can manipulate any person's mind and body at will. (Source: Mediabank, translated)

Ero doctor

Based on the erotic game by Blue Gale Light.

Inkou Kyoushi no Saimin Seikatsu Shidouroku

There exists a sex life guidance notebook. When someone writes instructions inside and shows them to another person, she will be compelled into following said instructions under the pretex of guidance, as long as they are sexual in nature. Now having fallen into the hands of an unscrupulous and horny teacher, the notebook will undoubtedly be used to indulge in all the hottest girls at his school.