Japan culture center - Wakizashi (Japanese: 胁 差) is a traditional Japanese sword with a blade length of the eye between 30 and 60 centimeters (between 12 to 24 inches).
Samurai wakizashi is used as a weapon when there is no Katana. When entering a shrine or building castles, samurai katana will leave the guards at the entrance. However, wakizashi always stay taken at any time