Once was enough

"I will become the ultimate loser, and I will use that to punish you." Driven by this singular vow of retribution, Eun-Hyeok finds himself inexplicably thrust back into his high school years—a painful era when he was nothing more than a helpless target for relentless torment. Waking up in the past, his initial reaction is one of sheer terror. The memories of his former suffering overwhelm him, leaving his body trembling with deep-seated anxiety as he faces the very environment that once broke his spirit. However, Eun-Hyeok is no longer the defenseless student he used to be. Though trapped in his younger body, his mind carries the full weight of his future experiences. Armed with the invaluable knowledge of what is yet to come, he begins to shift the power dynamics of his youth. Instead of cowering in the shadows, he methodically turns the tables on those who once made his life unbearable. Using his foresight as his greatest weapon, Eun-Hyeok embarks on a calculated campaign to tame his former bullies, transforming his past trauma into the perfect instrument for their punishment.