Otogakure

, called Oto for short, was Orochimaru's personal village, founded for the express purpose of collecting ninja for his experiments and his quest to learn all jutsu. In actuality, Oto is not really a village, but a group of hideouts and bases scattered throughout the Land of Sound and other countries. Sound ninja use a diverse amount of jutsu, which are mostly centered around modifications and mutations Orochimaru gave them.

Team Dosu, under Orochimaru's orders, entered the Chūnin Exam with the goal of killing Sasuke Uchiha. However, Orochimaru was actually using them as test subjects for Sasuke's power after Orochimaru gave him the Cursed Seal. Later, Otogakure assisted Sunagakure in invading Konoha. Otogakure was thought to be attacked by Hidan and Kakuzu as it was one of the targeted villages marked in Kakuzu's map. With Orochimaru being sealed by Itachi Uchiha, the fate of the village is unknown.