Dragon Ball Z volume 12 features story and art by Akira Toriyama.

As the battle of Namek turns the entire planet into a fireball, Goku shows mercy to his opponent Freeza - but the would-be ruler of the universe is ungrateful. Awaiting Goku's return to Earth, the heroes are shocked to find Freeza's spaceship hurtling toward them, with the evildoer vowing to destroy the planet! Meanwhile, the mysterious warrior Trunks appears from the future, with an alarming message!