Dragon Ball, Vol. 01 by Akira Toriyama

Meet a naive young monkey-tailed boy named Goku, whose quiet life changes when he meets Bulma, a girl who is on a quest to collect seven "Dragon Balls." If she gathers them all, an incredibly powerful dragon will appear and grant her one wish. But the precious orbs are scattered all over the world, and Bulma needs Goku's help (and his super-strength)! With a magic staff for a weapon and a flying cloud for a ride, Goku sets out on the adventure of a lifetime...