Daichi's father is a man who was killed.

A silhouette of him was seen with Daichi at a play park in a vision of a world Z-one could create.[2]


  1. Yu-Gi-Oh! 5D's Episode 140 "The Soul-Binding Gate! The Forbidden Future!"
  2. Yu-Gi-Oh! 5D's episode 140: "Soul-Binding Gate! The Sealed Future!"