I Transmigrated Into Swallowed Star and Got the Dragon Ball System

Lin Hai first transmigrated to the Devouring World, where he became an Intermediate Warrior and gained a golden finger: the Dragon Ball System.

With the help of the Dragon Ball System, he continually increased his strength, transmigrating to the Devouring World, the Dragon Ball world, fantasy worlds, cultivation worlds, the Marvel Universe, and the Primordial World, before finally transmigrating back to his hometown.

Besides modifying Lin Hai's body to give him Saiyan constitution, letting him grow stronger as he fought and transform into various Super Saiyan forms to boost his combat power, the System could also let him exchange for Dragon Balls and various treasures from Dragon Ball and the Devouring World.

At first, Lin Hai used Senzu Beans in the wilderness to repeatedly trigger his passive ability, going from an Intermediate Warrior to an Advanced War General in just three days.

Several years later...

The Golden Horned Beast appeared. Lin Hai transformed into a Super Saiyan and used his Planetary Level strength to beat the Star Level Golden Horned Beast so badly it questioned its whole existence.

Several more years later, Lin Hai transformed into Super Saiyan 3 and crushed Nuolanshan.

Hundreds of years later, Lin Hai went to the Dragon Ball world, learned two divine techniques, mastered Ultra Instinct and Ultra Ego, and defeated Beerus. He then went to fantasy worlds and learned all kinds of mystical arts, traveled to the Primordial World and learned various immortal arts, and finally returned to his own world...