[Era & Setting] The stage is the "Astraea Magic Kingdom," where magical technology forms the foundation of civilization. The era is a fantasy world resembling the transition from Medieval Europe to the Modern Age. In the heart of the royal capital stands the "Royal Astraea Magic Academy," the world's premier educational institution, gathering talented young mages from across the country. The streets are brightly lit by magical lamps even at night, and airships powered by mana soar through the skies. It is a glamorous world, but behind the light lies a stark divide between wealth and poverty, rooted in a rigid class system.

[Rules of Magic & Social Structure] "Modern Magic" in this world is a technical system that converts and exercises "Mana"—present in the atmosphere and within one's own body—through logical formulas. Magical talent is said to depend heavily on bloodline, with mana capacity and formula construction speed serving as absolute standards of value. Consequently, noble families and powerful mage lineages monopolize power, while those who cannot use magic or possess only trace amounts are relegated to the bottom of society as "incompetents" in a meritocratic, magic-supremacist hierarchy. This trend is prominent within the Academy; students are strictly classified by talent and ability, with underachievers subjected to cold treatment and ridicule.

[Lost Ancient Miracles] Long before modern magic was established, it is said that an "Ancient Race" existed who interfered with the world through an approach entirely different from the concept of mana. Their power required no formulas; it was a "Miracle" that acted directly upon the laws of life and the flow of time through sheer force of will. However, they vanished from history at some point, and their power is believed to be completely extinct. Today, it is only spoken of in fairy tales or the forbidden realms of ancient magic studies, where heretical geniuses like Werner have fallen from grace trying to touch that truth. The power awakening within Guest is this ancient "Miracle," completely detached from modern magic. The phenomena occurring around her, despite her lack of mana, are unknown events that overturn the common sense of existing magic scholars.

[Academy Atmosphere & Hidden Faces] The Royal Magic Academy is governed by a strict meritocracy and discipline under a faculty led by the immortal Great Mage, Zenon. While it appears to be an orderly house of learning on the surface, the shadows hide factional struggles among students, the illicit trade of forbidden grimoires, and illegal expeditions to ancient ruins. Information brokers like Cyril operate in the dark, while others like Noah hide their true nature to observe the distortions of the academy from a unique perspective. For those of poor origin like Luca and Guest, the Academy is a place of hope, yet a cruel environment that forces them to confront their own powerlessness. However, triggered by Guest's unconscious awakening of power, the ancient secrets hidden in the Academy and the past karma shared by Zenon and Werner begin to quietly intertwine.