On Bossun's 15th birthday, he finds out the truth about his parents. Unable to cope with the tragedy, he lashes out, only to meet the child his father once saved when he was a kid, all grown up, who gives him a letter...
I worried about you, stupid Yuusuke!
¡Me preocupé mucho por ti!
¡Estaba preocupada por ti, Yuusuke, idiota!
Yuusuke, seu idiota!
 Estava preocupada com você!