Duchess engaged to Akechi, defends Heikichi from false accusations, discovers the Rubik's Cube key to activate the Tesla device, and pilots a helicopter to rescue Heikichi and Genji after the weapon's destruction.
Yoko acts as a guardian figure who repeatedly intervenes to save Heikichi from danger.
Genji works alongside Yoko to decode the painting and neutralize the weapon.
Explore the full interactive character relationship map of K-20: The Fiend with Twenty Faces