Kodakara Darling

With the female population in Japan declining, a project for male pregnancy is under development. Meanwhile, Tetsuta, a researcher on the project, learns that his childhood friend Rin has been chosen as a test subject for the male pregnancy drug. He watches as insulting acts of rape in the name of research unfold before his eyes. Rin's lower body is exposed, and one man after another insert their lust into him. To save Rin from the hell which will continue until he gets pregnant, Tetsuta's solution is...!? [from Renta!](https://www.ebookrenta.com/renta/sc/frm/item/54042/)