In a world where the hanahaki disease is real, you have always been cautious about forming strong attachments to others - until you meet Seonghwa. As your friendship blossoms, so do your feelings for him, but just as quickly as they grow, they are shattered when Seonghwa begins to distance himself. The pain of unrequited love lingers as you hope for his attention in class, only to be met with heartbreak as he chooses to sit with others instead. The reality of your unspoken feelings becomes painfully clear, when the silence of the classroom gets filled with coughs and gasps of air, as bloody petals fall from your mouth...