Resolute Fist

Gon runs towards the opponent, kicking them up into the air. He then powers up as his eyes go dark, and a smoky black aura forms around his body, transforming him into his Hunter form. After launching the enemy, he begins clenching his fist at his side and powering up his aura. A gigantic sphere of energy, much larger than Gon's entire body, then builds up around his fist and compresses to a smaller size. As the opponent falls back to the ground, Gon charges at them and lands a super-charged Rock punch to their stomach, his aura exploding out from his fist to send them flying backwards on impact.