A powerful witch can cast spells without speaking; in reality she is just shy and distant from people. But now she is assigned to guard a prince.

Um necromante de uma era distante se encarna em um garoto na Tóquio moderna. Mas ele se envolve em um mistério sobre o garoto e seu próprio passado.

While saving a child from harm, otaku Asahi Ikusaba is transported to another world and believes he has reincarnated with cheat skills similar to those of the characters from his favorite games and novels. Unfortunately, reality strikes when an encounter with a powerful monster shows that he is still nothing more than an average person. In this moment of extreme danger, Asahi instinctively calls out to his overly doting sister, Maya, who appears out of nowhere, possessing the overpowered abilities he thought he had. Maya is ecstatic to see her brother again and resolves to use her newfound powers to protect Asahi no matter what. Together, the close-knit siblings attempt to find a way back home while enjoying their new lives. However, it soon becomes clear that their arrival in this world may have had a purpose. With the Demon King's overwhelmingly powerful army approaching, no one but Maya seems to be able to stand in its way.

Once upon a time in a faraway land there was a prince, a prince genius. Prince Genie fought alongside his people and led them to numerous triumphs. However, to tell the truth, all he wants is to leave everything and live in peace.