The Kamehameha was Master Roshi's self-created ultimate technique, the signature move that made the Son family famous, the nightmare of villain bosses in beam clashes, and the Dragon Ball move everyone rushed to imitate—the Kamehameha Wave!
The principle was to draw out all the ki in the body, then use a secret method to guide it and gather it at a single point in the hands, before finally firing it out.
The first and most difficult part was how to stir up all the ki in one's body. For Saiyans like Son Goku and Son Gohan, that was far too easy.
The second was how to compress that ki into a single point. None of that was difficult for Son Gohan, who placed great importance on training the mind and spirit.
So even without Master Roshi's instruction, Son Gohan could still use the Kamehameha Wave with ease.
Gathering most of the energy of three fighters, the black beam of energy laced with lightning was like a charging black panther, roaring as it rushed toward Son Gohan.
The Kamehameha Wave, meanwhile, was like a comet from beyond the heavens, carrying an unstoppable momentum as it slammed fiercely toward the black energy beam.
The instant the two sides collided, intense energy fluctuations erupted outward from the point of impact.
Even the air was forced completely away by that violent energy, forming a momentary absolute vacuum.
At that moment, the two attacks locked in a stalemate, with neither side able to suppress the other.
"There's hope!"
The ten fighters on this side were all delighted. Immediately, four fighters broke away from the formation and charged rapidly toward Son Gohan.
During a beam clash, because a large amount of gathered energy had to be controlled, one's defense and attention would usually drop somewhat