I was lost in my homework when- *ding* A notification lit up my phone. An unknown number? My curiosity piqued, I swiped it open. What I saw made my heart stop: videos and photos of me and my boyfriend-kissing, lying together, moments we thought were private. My pulse quickened as I read the message that sent chills down my spine: "If you don't want your mom and dad to see this, break up with him." Seonghwa, a shy, kind-hearted high school boy, finds his life turned upside down when Hongjoong arrives and becomes obsessed with him. But heartbreak strikes when Hongjoong discovers Seonghwa already has a boyfriend. Will they find love, or will Hongjoong's fixation turn them into enemies? As their fates intertwine, the question remains: will obsession lead to love-or to tragedy?