A kid whose father was a washed-up boxer becomes obsessed with boxing not because it's cool, but because it's the only way he knows how to love him. The show commits entirely to Genki's stubborn belief in his dead father's strength, even when every adult in his life is telling him to let it go. That's not a sports anime about winning tournaments, it's about a child keeping someone alive through sheer force of will, one round at a time.
Five-year-old Genki Horiguchi grows up with only his father, Shark, a professional boxer who has fallen on hard times and now fights as a traveling boxer. Genki's mother died when he was born. He believes his father is strong enough to become a champion, and he dreams of one day being a strong boxer just like him. When his father dies, Genki's grandparents take him in, and they are against him boxing. But Genki can't let go of his dream. He trains in secret, carrying his father's legacy in his fists. Along the way he meets people who shape his path, among them Teacher Ashikiwa, who looks like his late mother, and Mishima, a high school boxing champion. The result is a sports story that mixes action and comedy, about a boy fighting to honor the past while carving out his own future.
