In Jojo's Bizarre Adventure, Boingo used a stand which "predicted the future". What happened? An odd coincidence can be seen that it seems to predict the 9/11 attacks.

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There was a laughing plane and a man with "911" on his shirt. This was drawn in 1990, 11 years before the attack. In the 2015 anime version, the plane was still there but the "911" was removed. Hirohiko Araki said in an interview that he didn't remember why he drew it that way, and that he was shocked when told about it.