A big library filled with jutsu scrolls. Only Leaf village shinobi have acsses to the library. To make sure the leaf village jutsu is secure, Genin will be given a card to let them in. Each time they increase in rank their card gets updated. The following are the acess rules
Genin: E and D ranked Jutsu
Chunin:C-ranked Jutsu
Special Jonin: B-ranked Jutsu
Jonin: A-ranked Jutsu
Anbu,Sanin, and kage: S-ranked Jutsu
Enjoy your studies!