Fukumaden

The story of Fukumaden takes place in a world after the Demon King has been defeated by the hero. The hero makes a harem of women to pass down his blood, because the Demon King is fated to return in the next few hundred years. However, because he gathered too many girls, there are 100 women in waiting. The story depicts the women spending their time talking amongst each other as they wait for their turn to meet the hero. (Source: Anime News Network)