Hunter x Hunter (2011)
S01E23 The x Guard's x Duty!
Episode Overview
Gon and his friends are determined to reach Killua by getting through the Trial Gate. To do this, they must first hone their skills in the servants' quarters until they're ready to unlock the gate. On the other side, Killua discovers that Gon and the others have arrived to visit him. After putting in the effort during their training, Gon, Leorio, and Kurapika successfully manage to open the gate, but they find their path blocked by Canary, the apprentice butler.