Chapters 1–10:A boy named Atsushi finds himself summoned to a new world by a mysterious entity. Reborn as an infant in a royal bloodline, he soon discovers his new name—Kazuki Ayanami. Though physically a baby, his mind remains mature and ambitious. Gifted with exceptional physical and mental strength, Kazuki vows to surpass everyone in this new life, no matter the cost. After a time skip, at the age of five, he participates in the Spirit Choosing Ceremony, marking the beginning of his magical journey.
Chapters 11–20:Kazuki completes the spirit ceremony and forms a powerful contract with Elsa, a rare Celestial Spirit. At age eight, he reflects on his progress and finds an opportunity to prove himself in an upcoming war. This sets the stage for a sibling rivalry with his brother Arthur, as Kazuki aims to gain the right to participate in battle.
Chapters 21–30:Kazuki fends off a demon attack at his school, revealing his growing power and battle instinct. Meanwhile, he begins secret planning against the rival kingdom, North Ryehem, which also starts preparing for war. To earn his place in the conflict, Kazuki challenges Arthur—and emerges victorious, securing his place on the battlefield.
Chapters 31–40:In a quest for greater strength, Kazuki ventures to the fabled Dragon Nest, home to four ancient dragons. There, he collects the souls of fallen warriors who once tried to defeat the dragons, achieving a major breakthrough—Body Refining Tier-3—without directly harming the dragons. However, despite his actions, the dragons later attack the kingdom. It's Kazuki's mother, Queen Isabela, who ultimately defeats them, showcasing the hidden strength of the royal family.
Chapters 41–50:With the war temporarily over, Kazuki returns to South Ryehem, though peace is short-lived—North Ryehem declares another war in one year. To prepare, Kazuki travels to the Elf Kingdom in search of insight into his destiny. There, he slays goblins who escaped from prison but fails to glimpse his future—the Mirror of Prophecy shatters, unable to reveal his path, hinting at a fate too complex or dangerous to be foreseen.