is one piece episode 900 filler?

Luffy, Zoro, Tsuru, Komachiyo, and Kiku, settle into the tea house in the destitute Okobore Town to treat Tama's illness. As the child lies in bed, Kiku hands Luffy a crucible of strong medicine.

The medicine is very bitter, and Tama puts up some resistance in taking it, but Luffy forces it upon her. Some time later, Kiku approaches Zoro, who now waits just outside.

She offers to nurse Zoro's injuries from his earlier battle. He asserts to the woman that his wounds will heal on their own, but Kiku does not back down, and so Zoro silently complies.