Is Gintama episode 159 filler?
Canon No, episode 159 of Gintama is canon.
#159
If One Orange In The Box Is Rotten, The Rest Of Them Will Become Rotten Before You Realize It
みかんは一個腐るといつの間にかダンボール中のみかんを腐らせる
Aired 28 May 2009
Canon No, episode 159 of Gintama is canon.
#159
If One Orange In The Box Is Rotten, The Rest Of Them Will Become Rotten Before You Realize It
みかんは一個腐るといつの間にかダンボール中のみかんを腐らせる
Aired 28 May 2009