is one piece episode 831 filler?

Inside the Whole Cake Chateau, Sanji and Pudding rehearse their vows with a priest. The priest states that the marriage will be sealed with a kiss, and Sanji notes that this will be when Pudding attempts to shoot him.

However, when Pudding talks to him, he is quickly taken aback by her beauty and struggles to remind himself of who she truly is. Outside the wedding venue, Bege checks on the Straw Hats' status, but finds Luffy leaning out of his body to look around.