Shinobu Fujibayashi (藤林 忍 Fujibayashi Shinobu) is a girl who accidentally collided with Yoshiyuki Sakurai and kissed with him. Such event itself didn't boded ill, but this girl turned out to be shinobi who lives in accordance with her village strict laws. And those laws are says: "If you kissed, you should marry!".
- The name Shinobu means "endurance" (忍).
- Shinobu's surname Fujibayashi means "wisteria" (藤) (fuji) and "forest" (林) (hayashi/bayashi).
- Shinobu is a secret character.