In this world due to gradually decline in women population there was a project put in order ..so that male could get pregnant - such men are called PREGMAN .. Ikumi keeps his identity as a pregman secret because he never wants to give birth .." Even though Ikumi hates it, his body reacts to the feel of Chiharu's finger inside sue to his sudden rut period... Even his childhood friend is driven wild by his "pregman" pheromones…Let see how this pregmaverse unfurls
Nindan - Danshikou de Ninshin Shita Ore