Sora has a bad day at school, getting a bad score on a test. Depressed she folds it and makes a plane of it, letting it fly away by accident. The one who catches the plane is Ruka, her classmate. From here their cute love story begins.

Notes:
- Includes the one-shot "Kocchi, Muite, Sawatte.".
- Includes the one-shot "Seinaru Yoru wa Watashi to Shinasai!".