Doumo, Yuusha no Chichi desu. Kono Tabi wa Gusoku ga Gomei Waku wo Kakete, Moushi Wake Arimasen

In a secluded village, Croix lives a peaceful life with his wife, Wiel, and their young son, Alka. However, their tranquility is disrupted when Alka receives an oracle that declares him the only one capable of defeating the Demon King, known as the "Hero." Alka sets out on a journey with his fiancée, Saya, to fulfill this prophecy, accompanied by the expectation that he will save the world. Three years later, Saya returns to the village in a disheveled state, revealing that Alka has become a self-absorbed hero, disregarding the world's fate and instead focusing on waking up his own son with brute force. The villagers, who had once admired Alka's potential, are now faced with the reality of his reckless behavior, leaving them to wonder if their young hero has lost his way.