phenomen a book

the series follows (jin tae-hyun) a high school student,down by relentless bullying, decides he''''s had enough. Determined to fight back, he takes a stand not just for himself, but to dismantle the toxic system that allows bullying to thrive. Balancing his mission for justice with protecting his younger sister, he discovers the courage to confront his fears and inspire change, even as the challenges grow more dangerous.