Toa was reincarnated as the second son of a noble family while retaining memories of his life on Earth. Although he aimed for a leisurely and comfortable life in another world, he was exiled to a border fort at a young age due to his lack of talent in swordsmanship and magic. Ten years later, following his father’s death, he was called back only to be disowned by his older brother, Grass, who had inherited the family. Undaunted by these harsh circumstances, Toa decided to use the skills and knowledge he acquired at the border fort to become an adventurer. However, after helping a girl named Nikka during the guild’s entrance exam, he becomes entangled in an incident that shakes the royal capital–!? The exhilarating battle fantasy begins, where those who underestimate him will pay double!