Is Hunter x Hunter (2011) episode 21 filler?
Canon No, episode 21 of Hunter x Hunter (2011) is canon.
#21
Some × Brother × Trouble
キョウダイ×ノ×モンダイ
Aired 4 Mar 2012
Canon No, episode 21 of Hunter x Hunter (2011) is canon.
#21
Some × Brother × Trouble
キョウダイ×ノ×モンダイ
Aired 4 Mar 2012