Hunter x Hunter Episode 63: A x Hard x Master

A girl who has been following Gon and Killua introduces herself as Biscuit Krueger, a professional Hunter. She declares that they must obey her. Killua immediately refuses, and Gon mentions they already have Wing as a teacher. Biscuit responds that Wing was one of her students. Biscuit explains that they won't survive in the game alone. She then senses an enemy behind her and instructs the boys to sit and pretend to chat. She tells them there is an enemy behind her and outlines a plan: she will go south, and they will go north. When they reach a tall pillar, they are to use Zetsu and rush back. She then slaps Killua, pretending they are fighting, and heads south while the boys go north. The enemy begins to chase Biscuit.

As Gon and Killua return, they find Biscuit's hair has been cut by the enemy. They hide behind tall rocks and watch Biscuit fight the enemy. Biscuit effortlessly defeats the enemy without using her Nen, surprising Gon and Killua. After they reunite, Biscuit reveals her main purpose for playing the game is to find a specific jewel. Gon asks her to postpone her treasure hunt and teach them Nen. They reach an agreement, and Biscuit begins their training. She sets a rule for their enemy, whose name is Binolt: he must evade Gon and Killua's attacks for two weeks. If he succeeds, she will let him go; if he is knocked unconscious or cannot stand, she will kill him. Binolt is not allowed to leave the crater. The same rule applies to Gon and Killua. The fight begins.

While Binolt attempts to heal, Killua attacks him but has his face sliced by scissors. Gon tries to attack but is also stopped by a scissors attack. Killua tells Gon to keep an eye on Binolt while Killua attacks with rocks. Gon thinks this is a good idea and punches a large rock behind him, creating falling pieces. He and Killua then attack Binolt with many rocks, making it difficult for him to avoid them. As Binolt dodges the rocks, Gon attempts to land a kick, but it is unsuccessful. Biscuit, observing nearby, comments that they are like jewels that need polishing to shine. After the boys create a "forest" of rocks, they attack the impeded Binolt. Killua appears in front of Binolt, about to punch him, when Gon suddenly stops him. Gon says it would be a waste to stop the fight now and suggests they continue it tomorrow after resting.

They continue fighting for days until Binolt finally gives up on day 10. Soon after, he leaves them. Biscuit says they should go to Masadora. They begin a 70-kilometer journey to the town, which will take three hours. Once there, they go to a department store. Biscuit buys three cards, and they return to a rocky area. The cards Biscuit bought are revealed to be tools for digging. She tells them they must dig a straight path through the large rocks back to Masadora. Gon and Killua dig until they reach the end of the rock. They both fall to the ground from exhaustion. Biscuit then tells them they must sleep in a sitting position. She makes them sit while holding a rope, which suspends a rock above their heads. Killua finds this easy due to his assassin training, while Gon's head is hit by the rock soon after he falls asleep.

The next day, they resume their training by digging their way to Masadora. They keep digging until they encounter a solid rock that Gon's shovel cannot break. Gon suddenly has an idea to use his aura and let it flow into the shovel. Killua starts doing the same, and their digging becomes faster and stronger. Biscuit states that they have learned a new application of Ten, called Shu. She also states that once they reach Masadora, they will have completed the first stage.