: The screenplay was written by Kazuki Nakashima , the writer behind high-energy hits like Kill la Kill and Gurren Lagann , contributing to its "intense battle" style.
: Despite its comedic nature, the film is famous for its "tear-jerker" ending, which explores the bond between father and son and the identity crisis of the robot clone.
: The story follows Hiroshi after he goes for a massage to fix a sprained back and returns home as a powerful robot.
