In Amestricy, a peaceful city in the kingdom of Valônia, Hitory, a 16-year-old boy, lives under the shadow of a mystery. Son of a retired warrior and a legendary mage, he carries an enigmatic scar on his chest, the origin of which he cannot remember. In a world where magic is the essence of all, Hitory stands out for his lack of mana, being seen as a mere mortal. However, with the support of his mother Zelia's memory and his father Dwalgik's strict teachings, Hitory seeks to understand his true potential, knowing that there is more to his existence than meets the eye. His journey begins with the simple quest for answers about who he is, but soon, the stars whisper that he is destined for something much greater. After a terrifying event that threatens his life, Hitory, now immersed in both physical and emotional pain, receives help from Tekime, a young girl marked by the shadow of her own suffering. As they both face the consequences of past choices and the weight of their destinies, Tekime is taken to a deep dream where Lunaria, the Goddess of the Moon, reveals the truth about the burden Hitory carries: he is the vessel of Édros, the Lord of Sins, and his fate is intertwined with both light and darkness. Tekime, now marked by the divine mission, must protect Hitory and save the world from impending destruction. In an act of surrender and purity, she connects with him, healing his essence and bringing renewed hope, but what this truly means for them both is yet to come.