The final sibling quarrel begins, with their unyielding beliefs at stake. Anisphia, the reincarnated princess, has a younger brother, Algardo, who is the only prince with the right to the throne of the Palettia Kingdom. In a country where the ability to use magic is valued as the essence of royalty and nobility, how did he come to despair of magic, those around him, and Anisphia herself? As they confront the hidden truths they've kept from each other, the outcome of the sibling quarrel between the princess who wishes for the future and the prince who worries about it is...!