is one piece episode 547 filler?

After Otohime passed away, Hody Jones caught and shot a human pirate whom he claimed to be Otohime's assassin. Despite Jinbe's orders to hide the body, Hody exposed to the crying people that a human killed Otohime.

Neptune locks himself inside Hard-Shell tower and refuses to come out until he calms down. The Minister's keep him accompanied during his time and Neptune comments, he would have killed the shooter even if he was unarmed and realized Otohime would not want that.