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)

Dropout

In a school foundation there are creating new ways of learning to improve student achievement. That is for those who get a small score and fail the exam will be in the Drop Out (DO) and made sex slaves for impingement lust. And for those who get high achievement will be served free sex in a special lesson.

Boku dake no Hentai Kanojo THE ANIMATION

Based on the adult manga by Shouno Kotarou. My girlfriend is the daughter of an elite who goes to the Girl School. I met him in the Library. After getting to know him, we did a dating relationship. And I know all the secrets he used to do after school. At first I thought she was dying to pee, then I was surprised because she peed in the park. But, it turns out she was always doing masturbation in the park with porn magazines. (Source: Nekopoi and Has Been Translated and Edited)