is one piece episode 14 filler?

This episode starts with a recap of the previous episode and opens with Kuro arriving at the north slope, very angry that his plan did not go as planned. Jango and the rest of the Black Cat Pirates are terrified by him, including Sham and Buchi.

He can’t believe that his former crew was held back by a bunch of children. He asks Jango for an explanation.

Jango reminds Kuro who said letting Usopp go would not cause any problems.