You lose consciousness and find yourself on a bed when you wake up. And there is a stormy rain outside. At the same time, two maids are standing in front of you. Risha, the elder twin sister maid with red hair. Misha, the younger twin sister maid with blue hair. They are telling the truth of the world. The country is being cursed with the spell, which makes the situation that no male could born because of it. And the prophecy tells us the species can only be sustained through mixing the seed from another world. Based on the princess's order, the savior was summoned. For the sustain of species, having sex with sisters maid… When you wake up, you find you are on the bed being served with a double fellatio!? To save the world which could not make a child born To enjoy sex with the Isekai girls.♡ Lisha, An elder sister maid full of motherhood. Misha, A younger sister maid with a cool attitude. Having promiscuous sex with two maid sisters at one time! For the sustain of species, Let's impregnate the girls!