is one piece episode 815 filler?

Luffy and Nami are surprised by Pudding's revelation that Sanji proposed to her, but Pudding then says that she knows he only did it to be polite. She has no desire to marry him if he does not want to do it, and whispers something to Luffy and Nami.

Her words leave the two gaping in astonishment, and Luffy struggles to take in what Pudding just told him as she leaves the Prisoner Library, tearfully bidding them goodbye. Inside a room in the Whole Cake Chateau, the Vinsmoke Family, except for Reiju, sits and drinks tea.