Mushoku Tensei: Twin Stars of Sword and Magic

[Mushoku Tensei] [Sword and Sorcery] [Original Protagonist] Hilde Greyrat. Born into this world as Rudeus's younger sister, she knows she is a reincarnator, but has forgotten how she came to this world. Even so, she will obtain something precious in this world with her own hands. She will get along with her older brother and promise to meet him at the summit. And she will search everywhere for the voice that called her into this world. Not to save the world, nor for revenge or to repay a debt, but simply to uphold the justice she believes in, even if that justice can save only one person and the price is the end of the world. Hilde will become a hero.