Episode 21 (2011), Hunterpedia

Some × Brother × Trouble (キョウダイ×ノ×モンダイ, Kyōdai × No × Mondai) is the 21st episode of the Hunter × Hunter 2011 series. It first aired on March 4th, 2012. After Gon learned why Killua had been disqualified, he was furious with Gittarackur, or rather, Killua's older brother Illumi. Gon confronts Illumi in front of everyone, telling him he doesn't have the right to be Killua's brother. He grabs Illumi's right arm and breaks it. Instead of apologizing, Gon convinces Illumi to tell him where Killua is

Hunter x Hunter 1999 vs 2011 Part 3: The Zoldyck Family – AniB

Why are Gon and Killua so skinny? - Quora

Watch Hunter X Hunter (2011)

Hunter X Hunter 2011 – 98 – Random Curiosity

Episode 19 (2011), Hunterpedia

Episode 11 (2011), Hunterpedia

List of Hunter × Hunter chapters - Wikipedia

Episode 21 (2011), Hunterpedia

Watch Hunter X Hunter (2011)

Episode 11 (2011), Hunterpedia

Hunter X Hunter 2011 – 107 – Random Curiosity

Hunter x Hunter 2011 Blu-ray Volume 4 Previewed - Haruhichan

Hunter X Hunter 2011 - 48 - Lost in Anime