Naruto Shippūden - Season 9 - Eps 191: Kakashi Love Song
A female spy, Hanare, from the Hidden Lock Village (Land of Key) is caught by ANBU pretending to be a musician. She is interrogated. However, the interrogation proves unsuccessful. Slowly, her past is revealed and so is her relationship with Kakashi. Team 7 spy on the two as they go around town, under the impression that the two are dating. After The Lock Village keeps a Leaf Village ninja hostage, they exchange Hanare for the ninja. It is then revealed that Hanare has a special ability, causing a large chase to occur. In the end, Kakashi lets Hanare free. The musician seen at the beginning entertaining Konoha ninja reminds Kakashi of Hanare which prompts the flashback.
About Naruto Shippūden

Title: Naruto Shippūden
First Air Date: 2007-02-15
Last Air Date: 2017-03-23
Status: Ended
Rating: 8.536/10 (from 8309 votes)
Language: JA
Seasons: 21
Total Episodes: 500
Network: TV Tokyo
Genres: Animation, Action & Adventure, Sci-Fi & Fantasy
Production Companies: TV Tokyo, Pierrot, Sound Box, Rakuonsha, Aniplex
Synopsis
After 2 and a half years Naruto finally returns to his village of Konoha, and sets about putting his ambitions to work. It will not be easy though as he has amassed a few more dangerous enemies, in the likes of the shinobi organization; Akatsuki.
Cast

Junko Takeuchi
Naruto Uzumaki (voice)

Noriaki Sugiyama
Sasuke Uchiha (voice)

Chie Nakamura
Sakura Haruno (voice)

Kazuhiko Inoue
Kakashi Hatake (voice)

Showtaro Morikubo
Shikamaru Nara (voice)

Satoshi Hino
Sai (voice)

Akira Ishida
Gaara (voice)

Hideo Ishikawa
Itachi Uchiha (voice)

Koichi Tochika
Neji Hyuga (voice)

Keiko Nemoto
Shizune (voice)