The × Guard's × Duty.Gon and his friends have decided to pass through the Testing Gate to see Killua. Zebro takes them to the servants' quarters where they meet Seaquant and rest for the night. They discover that everything in the house is extremely heavy, so they decide to train so they can be strong enough to open the Testing Gate on their own. Meanwhile, Killua is being tortured by his brother Milluki until he is ready to apologize to his mother. Killua learns from his family that his friends are at the estate to see him...