MTL - Pirates: Opening Nine Tails Bombs Mary Joa

After fighting ghosts for a while, Usopp probably learned some information about them.

Knowing that they are related to a person named Cardo, and besides the ghosts who can only live in the dark shadows, Cardo also has many human subordinates.

So after seeing Luffy 'flying' to Sirob Village in that posture, Usopp thought that Luffy was also Kado's subordinate, so he shot the arrow of spirit son.

Of course, because

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