Hunter × Hunter - Season 1 Episode 34 Skateboard × Apprentice × Honesty

The group meets a butlers' apprentice while walking closer to their target. She has Killua's skateboard, and refuses to let them pass. Repeatedly Gon walks over a line she drew, and each time she sends him flying with her mace. Eventually, she explains that she is Canary, a servant of Killua. Canary tells her Killua gave the skateboard to her because they're friends, so she should let Killua's other friends pass. She lets them pass, but is immediately hit by an unknown projectile.