Yeon Si-eun thought transferring to Mooyoung High would finally put the violence of his past behind him. Quiet, intelligent, and emotionally guarded, he only wanted a fresh start beside his boyfriend, Ahn Su-ho-the only person he trusted. But fate had other plans. Instead of joining Su-ho's class, Si-eun is placed in Class A, where he catches the attention of the school's most feared student: Han Su-gang. Wealthy, ruthless, and feared by everyone, Su-gang has never been denied anything he wanted. The moment he lays eyes on Si-eun, his curiosity turns into obsession. There's only one problem. Si-eun already belongs to Su-ho. Protective to a fault, Su-ho hides the darkest parts of himself from the person he loves. While Si-eun believes he's leaving his violent past behind, Su-ho secretly continues ruling the school through fear and brutality, desperate to keep his hands clean in Si-eun's eyes. As Su-gang relentlessly pursues Si-eun, a deadly rivalry ignites between two cousins-one driven by possessive obsession, the other by desperate love. Blood ties begin to shatter, loyalties crumble, and Mooyoung High becomes the battleground for a war where fists aren't the only weapons. Caught between two wolves, Si-eun must decide whether love can survive in a world consumed by violence... or if becoming the flower among wolves will only leave him covered in thorns.