Dragon Ball Minus: The Departure of the Fated Child
Dragon Ball Minus: Hanatareta Unmei no Kodomo
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)
