Ars, the reincarnation of a Japanese office worker, grows up in the Summerforth Empire as the newborn son of the noble Louvent family. The empire's medieval-like society is marked by significant social disparities and political tensions, which Ars believes will eventually lead to conflict. Equipped with the skill of Appraisal, which allows him to quickly evaluate another person's abilities and potential, Ars sets out to gather a diverse group of exceptional individuals to strengthen his domain, disregarding superficial factors like race or social status.