is one piece episode 886 filler?

The episode starts with the Neptune Family arriving at Mariejois on the wishes of late queen Otohime. Another scene shows King Sterry of the Goa Kingdom coming into the Pangaea Castle.

He was enamored by the grandiosity of the Empty Throne and wishes to sit on it but his efforts were thwarted by a priest who explains the significance of the throne. This does not stop Sterry's desire to sit on the throne.

In another scene, Shirahoshi is being captured by a slave on the orders of World Noble Charlos.