King's Raid: Ishi wo Tsugumono-tachi

The kingdom of Orvelia, established by the legendary King Kyle, experienced a century of peace after he defeated the demon king Angmund. However, recent demon sightings in the forests pose a new threat to humanity. Riheet, leader of a dark elf mercenary group, seeks to overthrow Orvelia to avenge the humans' mistreatment of his people a century ago.

Kasel, a young knight-in-training, embarks on a perilous quest to rescue his friend Clause, who went missing on a failed scouting mission. During his journey, Kasel discovers he is the long-lost son of King Kyle and the only one capable of wielding the Holy Sword Aea, which defeated the demon king.