is one piece episode 737 filler?

On a hill in Carta lies Kyros' house, where Kyros, the Straw Hats, Law, Kin'emon, Kanjuro, and Bellamy rest and recover from their injuries. Kyros explains why he lives here and offers the group anything they may need, and Kin'emon asks why Bellamy is with them, to which Law replies that Luffy knows him so he brought him along.

Kyros, Usopp, and Law fall asleep from exhaustion, and the door of the house begins opening. Zoro tenses up at the intrusion, but the person entering turns out to be Sabo, who throws Zoro a drink.