TL;DR:Japanese people can be.....unique.
The Japanese, by and large, looooove them some Western imagery/culture. A friend of mine lived there back in the late 90s/early 00s with her then husband and her young daughter. Natives would come accost them to get pictures with their kid because she looked like a poster girl for an Aryan day care(which they apparently found fascinating. Don't see many blonde/blue-eyed kids there, I suppose). And not necessarily pleasantly either, as in "Oh, excuse me? Could we take a picture with your daughter?" According to her, it was more like photobombing whatever they happened to be doing, or just walking right up to them, posing with kid before they could be stopped and snapping the picutre, then walking off without a word. No one was ever "violent"...just very forward. It was like they were just seeing the kid(and her "Western-ness") as an oddity/unicorn or something. Sort of like rednecks and giant balls of twine, I guess.