Reincarnated in a world where magic reigns, Yoru finds himself without any magical power. After the tragic death of his adoptive parents, he discovers a legendary sword guarded by a fallen dragonet named Flamelios. Although he has no magic, Yoru sets out to master the sword and change his destiny, guided by the spirit of the dragonet. Together, they will face a world ruled by magic and uncover the mysteries of this sacred weapon.