Mika, one year high school student who secretly fall in love with a classmate named Hiroki. From an ordinary girl who has never had love, become the most profound love. But Hiroki throw her away without reason, Mika gutted and love of deep wounds. When she met with the young man who did everything to see her happy,Mika finally relents and dating a young man, but then On the night Christmas Eve, Mika meet Hiroki again. Mika knows she is discarded because Hiroki is cancer. Then, Mika take care Hiroki until he death.