Souma is a young man who doesn’t like flashy things or things that stand out. His quiet life was turned on its head when a princess from another world came to his room. She told him that if he doesn’t have sex and make someone pregnant, then he will disappeared from this world. The girls around him become more assertive to save their dear Souma. During this short period left, will he be able to choose one of them and impregnate her?