"The Person from Root!!" (“根”の者!!, "Ne" no Mono!!, Viz: The Foundation) is chapter 285 of the original Naruto manga.
Sakura and Naruto are not happy to be working with Sai, but accept his help if it means they will get to see Sasuke. Yamato gives them a chance to prepare for the mission. Sai is approached by a fellow Root member and is given his orders for the upcoming mission. Sakura says goodbye to Tsunade and, in doing so, runs into Danzō, a former rival of the Third Hokage who dislikes Tsunade, the Third's student. When everyone is ready, Team 7 departs.