Nikolego
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Then you need to start from Japan, specifically Hokkaido, or, if you prefer, take a more roundabout approach to get to Hokkaido.
Specifically, this Jules, when he says "island," it refers to Hokkaido.
Added 4 minutes later
look at the time the posts were published – they were all posted within the same hour and minute.
So, if you suspect a couple of Mafia members, you should have been able to figure it out quickly.