Based on the hit-game by Key, each volume focuses on one of the five heroines of the game in this order:

1. Yuki no Shoujo (Girl in the Snow) --> Nayuki

2. Egao no Mukougawa ni (Beyond the Smile) --> Shiori

3. Shoujo no Ori Girl's Prison) --> Mai

4. The Fox and the Grapes --> Makoto

5. Hidamari no Machi (A Sunny City) --> Ayu