Haven't gotten around to this update yet, nor am I in a rush to waste time seeing the negative response en masse. But last I checked, the only thing Japanese about this VN is the Sakura tree. A Sakura tree that, for all intents and purposes, didn't appear to be in Japan.
It's not just about the white people in Japan (though, if you've ever been, there's not a ton of Americans there. I was there for half a year and only ever ran across four that weren't tourists.), it's about everything not being Japanese. Let's make this basic as possible. Where does the VN take place? Japan. Do we see Japanese architecture? No. Do we see Japanese transportation (trains, subways, etc.)? No. Do we see a single Japanese person? No. In fact, all other ethnic groups make up 1% of Japan's total population. The game takes place in a specific culture and setting, yet everything is the polar opposite of it. How isn't that breaking immersion? But nah, you've gotta make it about race.
Dunning–Kruger is real, apparently.