From Storm in Heaven:

Daisuke took a step. He was asked to join the Tokko (aka Kamikaze) and he accepted, offering his life to his country. Set during the very end of World War 2, this story begins when Daisuke decides to die and tells the reader why he decided to make such an extreme decision. Was it for his country, was it for peace, or was it because everyone else made the same choice? What's in a man's mind when he knows he's going to die? Even in this rather tragic scenario, there is still hope – perhaps in a picture of your mother, or in a girl, or maybe in the future…