"Sasuke's Answer" is chapter 627 of the original Naruto manga.
Summary
At beginning of chapter Tobirama told Sasuke that his brother Itachi Uchiha is not only from the Uchiha clan who wanted to help village. He told Sasuke that one of them is also Kagami Uchiha. Hiruzen then told them that Kagami still is not only one and that his son Shisui Uchiha was also the one of them. Third Hokage is disappointed in himself because all things that are now happening is his fault for putting Danzō Shimura to deal with Uchiha. Sasuke told them that he killed Danzō. After Sasuke heard Hashirama's story he decided to enter the battlefield. Orochimaru says that he will go with Sasuke and tell to Hiruzen that he is now only interested in Sasuke's way. Hashirama, Tobirama and Hiruzen are preparing for meeting Madara Uchiha. Minato Namikaze is happy because he will meet his son. Karin is back and she tell's to Sasuke that she forgives him and that she love's him.