Giovanni is a young boy who lives on the outskirts of a small rustic village. His mother is bedridden and his father has not returned home since leaving to work on a fishing boat. An outcast at school, Giovanni has only one friend: Campanella, the mayor's son. During the town's Festival of Stars, Giovanni starts to daydream atop a hill and looks up to find a steam engine train floating in the air. He boards the train only to find his friend Campanella already there. And so, the two begin their journey through the stars where they come across unusual people and visit many beautiful and haunting places.

When aviation mechanic (and anime fanboy) Takuya Isurugi is transferred to the 801st Tactical Training Squadron, he gets more than he bargained for. Moderated by hard-headed veteran ace Mitsuru Konishi, the "Airbats" are an all-female aerial acrobatic team consisting of loose cannons Miyuki Haneda and Arisa Mitaka, karaoke freak and gambling genius Sakura Saginomiya, and junk food lover Yoko Shimorenjaku. Both Haneda and Mitaka do not get along with each other, and their rivalry worsens when they both fall for Isurugi. But with the entire JASDF having doubts about the team, the Airbats must work as a team or face total disbandment.

Serious and generous, but a bit shy, Yuudai has been unsuccessful with the opposite gender. Chizuru is an energetic and cheerful girl, but when it comes to boyfriends, she's been unlucky and clumsy, and never had a steady relationship. This is the first Christmas the couple spends together. Chizuru loves animals and Yuudai plans to give her a rabbit in a box, but it turns out to be... a mini donkey?! As the funny creature escapes, Chizuru goes after it, and Yuudai loses sight of them both! The time that should have been spent together... The important feeling that should have been revealed... Small, but precious things that tend to be buried in every day life. What answer will the two youngsters find while separated from each other? Yuudai and Chizuru—their feelings and the time they spent far from each other are delicately unfolded in this double-sided pure love story told from two different perspectives!

The story is from manga volume 23.