>>343395953
-Talking about social media sites
-Normal hobbies, like sports and surface-level video game interest
-Favorite anime is No Game No Life or Konosuba (and other recent isekai, but those two are the biggest red flags)
-Literally never talks about 4chan
-Visibly offended by slurs and shittalking 
-Doesn't reply properly when asked what boards he browses, "What's a board?", only says /vg/, etc.
These are the big ones.