Ringetsu the Animation

Long ago, the Rindo family was cursed by a monster. Since then, all of their newborn babies have been girls. To circumvent the curse, they had to marry members of the Higetsu family, who have strong spiritual power, and to bear a child by the next red moon. Now, the curse befalls to Naoto Rindo. In order to break the curse, he has to beget a child with one of the current generation of four Higetsu sisters.