影のセクハリスト～孕ませ王位継承騒動～

Makoto was an ordinary boy until he is told that he is the reincarnation of the king of wizards and pushed to enter Academy Lunaris, a magical school. There, Rie Sakamiya and Lumia Sunwest try to get his sperm and attack him. Even his teacher, Yoko Asakura allures him to get the genuine throne.

Then, Makoto receives a letter from the king, his former self, which inspires him little by little. He gradually learns how to use the imperial magic passed down for generations. The formal conditions to become king are the union with Rie, Lumia and Yoko using that power of dark. The king has regrets about them. Can he master the magic of the dark to harass and allure the girls? Can he make them pregnant and succeed to the throne!?