Toa, who retains memories of his life on Earth, is reincarnated as the second son of a noble family in a different world. Dreaming of a carefree life, his hopes are dashed when, deemed talentless in both swordsmanship and magic, he is exiled to a remote fortress at a young age. Ten years later, upon the death of his father, Toa is summoned back home only to have his estranged brother and new head of the family, Glaas, officially disown him. Despite this harsh rejection, Toa remains undeterred. He decides to utilize the skills and knowledge he honed during his years at the fortress to pursue a career as an adventurer. However, his life takes an unexpected turn when he rescues a young girl named Nika during the guild's entrance exam, inadvertently becoming embroiled in an incident that threatens to shake the very foundations of the royal capital. With his indomitable spirit and resolve to repay any slight twofold, Toa’s thrilling battle fantasy begins!