Thread:Linerie/@comment-25775601-20160512164536/@comment-22176867-20160512195133

あたリ is atari, which means "around", "in the vicinity/neighbourhood", "nearby". Basically it means Shouto, Katsuki and Izuku were born in the area near Shizuoka Prefecture while Fumikage was born specifically in that prefecture.

It's really weird for it to be listed liked that, though. I don't see why Horikoshi is not being specific... We could list it as "Near Shizuoka Prefecture" or "Shizouka Prefecture Neighbourhood", I guess.