Unforgivable!! (volume)

is volume 21 of the Naruto manga.

Chapters

 * 181.
 * 182.
 * 183.
 * 184.
 * 185.
 * 186.
 * 187.
 * 188.
 * 189.
 * 190.

Synopsis
Sasuke decides to go to Orochimaru in order to get stronger, and accompanies the Sound Four back to his lair. Upon learning of Sasuke's defection, Naruto accompanies Shikamaru Nara in assembling a team to retrieve him, and the two gather Neji Hyuga, Kiba Inuzuka, and Choji Akimichi to their cause. The team pursues the Sound Four until they are trapped by Sound Four member Jirobo, who distracts them while the rest of the Sound Four goes on ahead. Choji is able to free the team from Jirobo, and begins to do battle with him while the others continue their pursuit. Choji and Jirobo have a battle of strengths, with Choji eventually claiming victory.