Yuusha no Segare

A sudden family meeting is held at the Kenzaki household in Tokorozawa City when a woman named Dianaze Krone arrives from another world. She claims to be an envoy seeking the Hero of Salvation, identified as Kenzaki Hideo, the father of high school student Kenzaki Yasuo. Yasuo is shocked to learn his father is considered a hero who once saved another world. Diana addresses Yasuo as the "Son of the Hero," drawing a cold reaction from his sister. As tensions rise within the family, the balance of their normal life is disrupted by the arrival and claims of the visitor.