In the kingdom of Soutei, the Desemann family is known for being utterly outrageous—they eat raw meat, possess overwhelming combat ability, and each member has been blessed with multiple powerful skills at their tenth birthday. The eldest son, Alexander Desemann, is the sole exception. When he turns ten, he receives only a single, unpopular skill: earth magic. Surrounded by siblings who can fight and contribute to the family, Alexander struggles with deep insecurity, unable to match their strength or help support the household. His younger sister Maria, however, sees something no one else does. She calls him a monster, insisting that his earth magic is far from ordinary.

As Alexander begins to train under Maria’s guidance, he discovers that his magical reserves are enormous. His earth magic can refine materials, set traps, and manipulate terrain in ways others never dreamed of. He takes a job at a construction firm to use his skills practically, but soon the family’s circumstances change when his father, a knight, is granted a territory to defend and develop. Alexander’s latent power begins to blossom. He gains his first retainers: Rice, a diligent caretaker, and Lacris of the Bani tribe. Together they build a stable administration in the borderlands, but the neighboring Thermeer Empire has other plans.

Through a plot by the imperial army, Alexander is kidnapped. In captivity, he meets Terres, the commander of the empire’s 13th Knights, who shares his aversion to war. Terres speaks of necessary sacrifices, but Alexander refuses to accept that logic. With the help of his siblings, he escapes and returns home. War becomes unavoidable, and Alexander must decide what kind of hero he wants to be. He vows to protect his family and his people, not by submitting to the price of conflict, but by using his earth magic and the bonds he has forged to carve his own path. The story follows his journey from a self-doubting boy to the kingdom’s legendary hero, exploring what it truly means to be strong.