Jaco the Galactic Patrolman

Dragon Ball follows the adventures of Son Goku from his childhood through adulthood as he trains in martial arts and explores the world in search of the seven mystical orbs known as the Dragon Balls, which can summon a wish-granting dragon when gathered. Along his journey, Goku makes several friends and battles a wide variety of villains, many of whom also seek the Dragon Balls for their own desires. Along the way becoming the strongest warrior in the universe. Part II of Dragon Ball is also known as "Dragon Ball Z" in North America. Note: Includes one extra chapter.

The story covers the time period up to Goku being sent to Earth, and marks the first appearance of Goku's mother Gine in the Dragon Ball franchise. This is a special manga featured in the collected volume of Jaco the Galactic Patrolman (Source: Wikia)

Having defeated Boo, Goku is starting to get bored with his life on Earth. His wife, Chi-chi, wants him to get a job, but all he wants to do is train and fight stronger enemies. Elsewhere in the universe, the God of Destruction, Beerus, and his attendant Whis are traveling from planet to planet in search of food and entertainment. After blowing up some hapless victims, Beerus is reminded of a man from his dreams with the moniker “Super Saiyan God,” or something like that… The God of Destruction sets his sights on Earth to track down this mysterious man! Maybe this will give Goku something to do? *Source: Viz Media, Vol. 1*