"Gaara's Death" (我愛羅の死, Gaara no Shi, Viz: The Death of Gaara) is chapter 278 of the original Naruto manga.
While Team 7 and Team Guy try to run. Kakashi, knowing they cannot get out of the blast radius in time, uses Kamui on Deidara to send the explosion to another dimension. Kakashi, exhausted from overusing his Mangekyō Sharingan, collapses afterwards. The two teams relocate to a field where Sakura tries to revive Gaara, but he has already died so there is nothing she can do. Naruto begins to cry and lashes out at Chiyo for sealing Shukaku within Gaara in the first place, therefore causing out his death after sentencing him to a life of loneliness. Knowing he is right, Chiyo begins to use her life-transference technique on Gaara.