Tokunō Yūshi's ordinary life is upended when his friendship with Oh Sion stirs a dangerous, unrequited love. As his feelings deepen, a rare condition-Hanahaki Disease; causes flowers to bloom from his lungs, forcing him to balance the joy of closeness with the fear of dying. Amid school chaos, sports, and adventures moments, Yūshi hides his suffering while Sion remains unaware, and the return of his ex, Yoon Sangah, threatens to shatter everything. A raw, emotional, and cinematic story of friendship, obsession, and the unbearable pain of loving someone you cannot have.

Yushi never asked for trouble-he just needed money to pay his school fees. Desperate and broke, he takes up a tutoring job, only to find himself stuck with Sion: a bratty, arrogant, narcissistic high schooler who thinks the world spins around him. Sion doesn't care about grades, rules, or anyone's time but his own. Yushi, on the other hand, has no time for attitude-just survival. But when two completely different worlds collide in a quiet study room, tension brews, sarcasm flies, and sparks begin to flicker in the most unexpected way. What starts as an irritating arrangement soon turns into something neither of them saw coming. ---