The narrative begins with the protagonist's traumatic birth, experiencing intense pain and a sense of physical reconstruction. Unlike a typical infant, they retain the memories of an old man who had given up on life. This elderly man's memories reveal a past life in a democratic society, starkly contrasted with the current world, which is characterized by a rigid class system where birth determines one's status. The protagonist learns from a divine entity that this transmigration is a "punishment" for a life lived without purpose, forcing them into a world where freedom of action is severely restricted.
The protagonist, however, views this transmigration not as a punishment but as a "gospel." Their previous life, marked by neglectful parents, abuse, and a soul-crushing factory job, left them with a sense of resignation and no attachment to their past. The new world, despite its limitations, offers a fresh start, free from the malice and harm of their previous existence. They are born into a "Knight Baron" family, a noble house that bridges the gap between the aristocracy and commoners. This world operates on a medieval fantasy system, with magic and a strict hierarchy. The protagonist, now a child, dedicates themselves to learning about this new world, appearing as a quiet and obedient child to their family.
As they grow, the protagonist discovers the world's reliance on magic, which dictates social value and power. The nobility, possessing significant magical ability, holds sway, while commoners rely on "skills" acquired through divine blessing. The protagonist's family, the Knight Barons, are a lower tier of nobility, tasked with protecting their land and people, often acting as a buffer against monsters and beasts from the "Demon Forest."
On their tenth birthday, a mandatory confirmation of magical ability and skills takes place at the church. To everyone's surprise, the protagonist exhibits an unusually high level of magical power, equivalent to that of an Earl, along with skills in both craftsmanship and combat. This exceptional talent leads to their enrollment in the prestigious Magic Academy in the capital, a privilege usually reserved for higher nobility. The academy requires students to have a betrothed before enrollment, and due to the protagonist's unique circumstances and high magical potential, a difficult search ensues. Ultimately, they are betrothed to the fourth daughter of a Viscount, a woman with a troubled family background and also possessing Earl-level magical power. This betrothal is orchestrated by a powerful Marquis, the family's patron, to manage two problematic individuals.
At the Magic Academy, the protagonist excels in their studies, particularly in military strategy and tactics, demonstrating an exceptional memory and analytical ability. While their magical aptitude leans towards crafting and manipulating objects rather than flashy combat spells, their skills in metallurgy and their understanding of past-world technology, particularly firearms, begin to take shape. They face challenges in developing practical applications for their knowledge due to the world's lack of gunpowder and underdeveloped scientific principles.
The protagonist's betrothed, however, causes significant trouble with her inappropriate behavior and disregard for social norms, straining relationships and causing concern among the nobility. The protagonist, despite repeated attempts to reason with her, finds their efforts futile. The situation escalates to the point where the Grand Duke's family, the highest-ranking patrons, intervene. It is revealed that the royal family is observing the protagonist and others as a "test" to gauge their character and potential. The protagonist's betrothal is ultimately annulled due to her actions, and the protagonist is advised to focus on their own future.
Driven by a desire to protect their homeland and family, the protagonist dedicates themselves to developing practical applications for their knowledge. They focus on creating weapons that can be used by common soldiers, drawing inspiration from firearms from their past life. Through extensive research and experimentation in the alchemy tower, they develop a method to create a "magic battery" using powdered magic stones and a special coating, capable of powering devices for extended periods. This invention, initially intended for military use, proves to be a valuable commodity. The protagonist leverages their knowledge of patent law from their past life to secure their inventions, establishing a profitable venture and solidifying their family's position. They also refine their understanding of military strategy and the use of magic in warfare, aiming to create a more effective defense against monsters and beasts.
