The Fourth Shinobi World War is over - but Naruto and his friends can't relax. In addition to all the clean-up work, they also have to prepare for the appointment of the new Hokage, Kakashi Hatake. But all this is overshadowed when Naruto's comrade Sakura finds a mysterious diary. The author of the book writes that she was once a kunoichi of Konoha, but that the memories of all those she once knew have been twisted. Skeptical yet curious, Naruto, Sakura and some of their friends read through the diary of this woman, who not only seemed to know Gai and Kakashi, but was also close to the fourth Hokage. Little do they realize the danger they are getting themselves into...