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 2011 – 107 – Random Curiosity

Chrollo Lucilfer - Hunterpedia - Fandom, PDF

Rewatch] Hunter x Hunter (2011) - Episode 21 Discussion [Spoilers

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Hunter X Hunter 2011 - 44 - Lost in Anime

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Hunter X Hunter 2011 - 48 - Lost in Anime