What is "deadball"

is a 2011 Japanese splatter comedy film directed by Yudai Yamaguchi. The film stars Tak Sakaguchi as Jubeh Yakyu, a seventeen-year-old who accidentally kills his father with his extra powerful baseball arm. Years later, he is a juvenile delinquent and is sent to a reform school after killing over 50 people within a week. To escape the school, Jubeh agrees to join the baseball team, even though he had sworn off the sport since his father's death.

The film premiered at the Fantasia Festival in 2011. Reception to the film has been more positive than the joint-directoral effort between Yamaguchi and Sakaguchi on their film Yakuza Weapon.