is one piece episode 115 filler?

Miss Merry Christmas has informed Usopp that Luffy is dead. While she and Mr. 4 are glad that Luffy is gone, Usopp refuses to accept it.

The mole-like woman swings Usopp along the ground and Mr. 4 takes his hit. Even so, Usopp is still standing and believes Luffy is still alive.

Before Mr. 4 and Miss Merry Christmas continue, Usopp obstructs their vision with smoke, then Chopper tricks Mr. 4 into hitting his partner. Usopp then slingshots a hammer right into the giant Baroque Works agent from Chopper's horns.

One of Mr. 4's baseball's then puts the Baroque Works pair out.