The Naka Shrine is a shrine in Konoha. In the main hall, beneath the seventh tatami mat from the far right, is a secret meeting place of the Uchiha clan. In there is a tablet containing the clan's secrets. The tablet can only be read with specific dōjutsu: the basic Sharingan is able to decipher a minimal amount of the information, even more of it if the person possesses the Mangekyō Sharingan, and Rinnegan being able to read more than the others. Here the secrets of the Mangekyō Sharingan are written, as is the story of the Sage of the Six Paths and the Ten-Tailed Beast.
The Uchiha Senbei is a shop affiliated with the Uchiha clan that sold senbei within Konohagakure. The closely guarded secret recipe of the senbei gave the shop its fame