Meikoku Gakuen: Jutai-hen

Due to the influence of the Abyss… I won’t… no, no, noooo!!!!
An anime adaptation of the popular school ADV by the intense erotic production group T-REX, featuring voluptuous female students being violated in a different dimension!
The protagonist is assigned to a prestigious school where celebrities from various fields gather. During a certain time period, the protagonist and the heroines are consumed by the space known as the “Abyss,” which disturbs their minds and turns them into nymphomaniacs.
To save the heroines from the school principal, the sister, childhood friend, disciplinary committee members, and delinquent students, the protagonist must impregnate them and rescue them from the school!

冥刻學園 受胎編, Meikoku Gakuen: Jutai-hen, Meikoku Gakuen Jutai Hen, Dark Hour Academy: Fertilization Arc, 冥刻学园 受胎篇, Dark Hour Academy, 명계학원 수태편