7x40 - Dragon Ball Z: Dragon Box

At length, the roster of contestants for the Tenkaichi Tournament is decided. Goku asks Boo to cheat for him, and arrange it so that he can fight with a young boy in the first match. The boy's name is Oob. Goku is the only one who senses that he is the reincarnation of Majin Boo. Just how much power does he have? A match to behold soon gets underway!