I'm not the person you replied to, but I'm also mixed--white and Japanese--so I'll bite.

White people know I'm not white. They can't always put their finger on what I am, but they know it isn't white. Some have been surprised to learn I'm half. I get a lot of well meaning but annoying stuff like "But where are you really from?", compliments on my English, or assuming I don't know about American pop culture even though I was born here.

As for my other half, most of the people I personally know from Japan are relatives, so I don't really know how I'd fit in with that particular community. I have visited once, and found people very welcoming, but in a tourist sense.

Largely here I'm talking outside of family (though I do have the obligatory older racist family members). As a young kid at home, I identified quite strongly as Japanese. Customs, etiquette, food, even language leaned more strongly toward Japanese than typical American. It was just how it was, and I thought about it until other people questioned it.

But in terms of the "Asian kids" group at school, or trying to voice an opinion in class as someone who doesn't feel they fit with the "white" perspective, I found I was always sort of "other" from the minority kids as well. Both groups treat me as part of the other. For a kind of random but everyday example, I prefer chopsticks to a fork for most food, and I've had people tell me off for using them because they think I'm just trying to be cool or something. I've actually had people call me a weaboo before.

It seems like over the past couple of years, there's been an increase in this sort of thing but with an agenda attached. The only people in the universe who seem to think I "pass" as white to white people are minority people who want to ignore something I've said. Before I felt sort of unattached just because I wasn't quite either. Now I sometimes feel like my interpretation of my identity is rejected because someone wants to prove a point.