Yeon Si-eun has always believed that intelligence is his greatest weapon. In a world where strength is measured by fists and fear, he survives high school by staying invisible-until one act of defiance shatters his carefully constructed walls. As rumors swirl and enemies close in, Si-eun finds himself forced into the spotlight, navigating the harsh realities of loyalty, betrayal, and friendship. Everything changes when he meets Ji-hye, a quiet but fiercely determined girl with secrets of her own. Drawn together by circumstance, Si-eun and Ji-hye form an unlikely alliance, discovering comfort and courage in each other's presence. But as they face mounting challenges-from relentless bullies to personal demons-they must learn what it truly means to trust someone and stand up for themselves. Haunted by his past and uncertain about his future, Si-eun must decide who he wants to become. Is it possible to fight back without losing yourself? Or will the shadows of pain and expectation consume him entirely?