This is Zoro-Urashima meeting in the anime:
-Zoro insults Urashima and ask him to step aside
-Urashima responds to Zoro in a rude way
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Zoro glances at him menacingly
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Urashima is intimidated by Zoro and goes away
Actually this is
canon material. This is something that happens in the manga too, it's was just offpaneled:
It's a manga fact that Urashima was scared from Zoro's aura, in this case the anime didn't invent anything. I really struggle to consider it non-canon