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Artist's commentary
This is a gag pulled off by the one and only Koakuma person.
Apparently, if you go to the security checkpoint with time to spare, you can pop back out and send it back to your home via delivery, but we didn't have time, so it was confiscated.
And thus, today ends the Taiwan Trip chapter. The story of the Hakurei Shrine Reitaisai in Taiwan from the other day will come soon enough!