Humanity's End (人類絶滅 Jinrui Zetsumetsu, lit. "Humanity Extinction") is the four hundred eighty-seventh chapter of the Dragon Ball manga.
Super Boo lands on Kami's Lookout and insolently says "Thought so." Piccolo expects to be killed, but Boo says "come out." No one understands, so Boo shouts "COME OUT!!!" Piccolo asks what Boo means, and the monster replies that he wants to fight someone that can challenge him. He can sense a strong power up here. Krillin is scared, and the women come out to see what the noise is about. Boo is getting impatient, and Piccolo asks him to wait since the hidden fighter is not at full power yet and Boo only wants to fight the hero at full power, right? Boo hates waiting, so he will just have to kill some innocent victims. Piccolo keeps begging, but the monster grins, and walks the full circuit around the top of the palace. Everyone wonders what is going to happen. Boo returns to Piccolo, smiles, raises his arm, and starts firing off energy blasts straight up. The fireworks are spectacular, and the blasts arc down to the Earth, and each one kills exactly one person. Dende collapses at the sight of so much death. Boo smiles and says that everyone on Earth is now dead. Boo wants the opponent to come out to fight. Piccolo gives in. However, since the fighter is now sleeping, it will take 1 hour for him to ready. Boo asks how long one hour is. Piccolo creates a sandglass, and says that this will empty in one hour. Boo studies the thing, and answers "No way." So, Piccolo answers back that Mr. Satan's daughter is also up here with them. Boo recognizes Mr. Satan's scent and concedes. But he states that after 1 hour, he will kill them all, including Satan's daughter too. Boo then kneels down to watch the sand fall. Piccolo tells Krillin to get Trunks and Goten into the Room of Spirit and Time. In there, 1 hour will last 15 days. Right now, the boys are not good enough at fusion to defeat Boo. Goten and Trunks are sleeping. In the mountains, Chiaotzu and Tien Shinhan are wondering what it was that just tried to kill them. Mr. Satan is walking in the countryside with his puppy Bee, and he wonders what all that fireworks had been about.