is one piece episode 978 filler?

Although the arrival of the Straw Hat Pirates, Heart Pirates, and Kid Pirates was unexpected, the Beasts Pirates are still confident as they fire their cannons. Usopp and Zoro repel the attack.

Meanwhile, back at Tokage Port, Kanjuro is surprised to see the pirates being present there, having reported to Orochi about the changes of Kin'emon's plan. Previously, two Gifters bombed the Thousand Sunny on Orochi's orders.

The Straw Hats, who were located in Amigasa Village, heard the explosion at the coast. Luckily, the ship was built out of a durable wood and was unharmed by the explosion.