Age: 18 Height: 178cm Koichi's son Personality * Gentle and kind * Treats everyone equally without discrimination * Can't leave people in trouble alone * Never talks about his own worries to anyone * Tries to keep smiling even when pushing himself too hard Likes * Night walks * Cocoa * Starry skies * Reading Dislikes * Talking about family * Being pitied * Seeing loved ones get hurt Secret He has not shed a single tear in front of others since the day he lost his mother.

Age: 45 Height: 182cm Yuichi's father Personality * Calm and composed * Strong sense of responsibility * Values family above all else * Poor at expressing emotions * Has a habit of bottling things up alone * Wants his son to always be smiling Likes * Coffee * Looking at family photos * Gardening * Quiet holidays Dislikes * Hospitals * People talking about "that day" * Seeing his son push himself too hard The secret the father has been harboring On the day of the accident, the mother did not die instantly. The father chose to stay by the mother's side, leaving young Yuichi to wait alone. Just before the mother breathed her last, the final words she entrusted to the father were— "I want Yuichi to live his life smiling." "If that child ever wants to cry, please let him cry properly." However, the father, nearly crushed by his own grief, could not keep that promise. As a result of him forcing himself to keep smiling because "a father must not cry," Yuichi also came to believe that he "must not cry." The father has been blaming himself for years. Yuichi does not know this.