もっと！女装で孕ませてっ（Motto! Josou de Haramasete）

If she does not give birth to a boy of her own blood by her birthday one year from now, Yuu Kamishiro will be transformed into a woman.

In order to break the curse, Yuu transfers to Lilienne Academy, where she has a relationship with her “bride candidate” doll sisters, Mai and Yori.

Despite the difficulties of dressing up as a woman, Yuu enjoys a fulfilling sex life with Mai and Yori. His life changes drastically when he sees a girl being molested on the train. Yuu rescues a young girl named Ruui.

From that day on, Ruui begins a fierce attack on him, not knowing that he is a man. Then there are the sisters, who are aggressive about having sex with Yuu.

Maybe mom should go to Lilienne too~?”

[From official site]