I’m not of mixed Asian-Asian descent, but I do agree with you that not many scholarly texts discuss this: the way I see it, being someone of mixed Asian-Asian descent would be just as conflicted as being one of Asian-Caucasian or Asian-black races. I think it’s because, from a Western perspective, it’s hard to distinguish among the different Asian cultures, to the point that it’s assumed that they’re all homogeneous (which in fact isn’t true). It’ll be interesting to learn more about this phenomenon, as research seems to be scant regarding this topic due to a limited pool of participants/people who actually have inter-Asian/Asian marriages. Will have to see some day!