“Dear God, I now make this, the single request of my life…” —–The near future, Nagasaki. Into this city, with its long and checkered past was born a rarity: a child with wings. I don’t know when it started, but The school overlooking the town came to be known as hallowed ground – and that is where we met. Though summer comes closer, there is nothing new, and a boring day just rolls on. But, his boring life suddenly ends. He is forced to look for a key of the observatory. He reluctantly accepts it, but gets a little bit excited. An exciting feeling.... A hunch of something will happen. Just before the summer holiday, he meets her....