You're the Weird Creature! Gaimon and His Strange Friends!

Synopsis

With Usopp now in the crew and a new ship, the Going Merry, under their command, the Straw Hats head to an island said to hold a fabled treasure, only to encounter a strange man stuck in a treasure box that has also been looking for this treasure.

Guest stars

Tōru Ōhira

Gaimon (voice)