is one piece episode 581 filler?

Luffy, Zoro, Usopp, and Robin are standing near the dead dragon that Zoro killed and Luffy is trying to pull out the man who is stuck in the dragon's body. Luffy succeeds in pulling out only the legs, making everyone think that he killed the man.

The legs are revealed to be alive, making the whole group gawk at it. Robin points out that there is no trace of an upper body while Usopp states that he is quite tall.

While the crew remains baffled, the legs start to attack them but promptly run away after the unknown Shichibukai.