A single glance across a university café changes everything for sunghoon. When he sees sunoo laughing with friends, obsession takes root, violent and consuming. What begins as harmless fascination spirals into something far more sinister as sunghoon manipulates his way into sunoo's life while maintaining a perfect public facade. There is a devastating difference between love and possession where devotion becomes something truly terrifying.

"Keep it physical. No feelings. No strings. If you cross the line, we're done." University student Kim Sunoo managed for three years to keep his massive crush on his brilliant, stern biology professor, Park Sunghoon, a complete secret. He knew how he was: cold and completely out of reach, only available for his imagination. But a single mistake changes everything. When Sunoo accidentally uploads a folder of his explicit photos instead of his midterm essay, what he carefully built to protect himself completely shutters. Professor Park corners him with a tempting ultimatum: a purely physical relationship instead of reporting him and risking his expulsion from the school. No string attached, no feelings involved. Arranged only when desire demands it. But when buried emotions finally knock on each other's hearts, can a relationship built on pure, unadulterated craving survive in a vortex of irreversible confessions?