Kwon In-su, a medical student at SNU, shares his quiet and predictable routine with his close friend, Chul Seok. Then a girl named Byeon Ari enters the frame. The role model of SNU's Education Department, she is known for her undeniable beauty, intelligence, and magnetic presence. She instantly catches Chul Seok's attention, yet torments Kwon In-su and remains confidently unapologetic to him. Trust thins in ways no one can name. In-su notices how Seok rearranges himself around her, and Seok notices things he wishes he hadn't. What begins as mild discomfort grows into something harder to ignore, as moments blur and intentions become difficult to label. And Ari, whether intentionally or not, stands at the center of it all. As days pass, In-su begins to wonder, is she the problem, or is she only revealing what was already broken? Nothing is openly wrong. No one crosses a visible line. Yet something shifts, subtly, persistently, and In-su is left with the uneasy sense that his life has been altered without his consent. When friendship curdles into suspicion and silence becomes more dangerous than words, someone will be blamed. And someone will disappear. This is not simply a story about a routine disrupted; it is about something breaking beneath the surface, and no one knows who truly caused the fracture. ⚠️ Disclaimer: This is a work of fiction that explores mature and intense themes that may not be suitable for all readers. Please proceed with caution.⚠️