The story of Saeki Kentaro, who continues to fail the National Bar Examinations and lose sight of the goal of his life, and his old sister Keiko, who is a freelance writer looking up their grandfather Miyabe who died in the Pacific War as a Kamikaze pilot. Miyabe had an astute ability as a pilot of fighter planes, but he was extraordinarily afraid of death. His two grandchildren started wondering why he applied for the Kamikaze corps. Revealing Miyabe's unexpected title of "genius yet coward", they unveil a surprising fact which has been sealed for over 60 years.