One day, Hiura Mizuki, the former female manager of the American football club members in university days, suddenly shows up in front of ace quarterback Nishiwaki Tetsuro and his buddies who are on their way back from a reunion of American football club members. She makes a shocking confession to them, “I killed a person.” Mizuki has a gender identity disorder and now lives as a man. Then ended up murdering someone.Nishiwaki and his buddies feel disturbed but scramble to protect their brilliant youth and friend. How did the incident happen? As they try to get to the truth, distressing facts are gradually revealed. What decision will Mizuki and the team members reach?