Yeah on the one hand people by now should know that if they pose for a picture and it's uploaded onto the internet, even on a private page, it de facto enters the public sphere where anyone can see it, repost it, remark on it, etc. That's a risk of modern life. Yet even so, there something vaguely disquieting about these photos. The fact that everybody else's faces are covered up clearly indicates that the OP actively acknowledges there's a privacy issue. And regardless of her "technically" active status, for a long time now Riho hasn't made public appearances and is effectively a private citizen. Isn't she allowed to live her life in obscurity just like her classmates? In the past this type of thing hasn't bothered me as much, but maybe the blatant double standard here frames the issue more boldly. With that in mind I'M JUST SUGGESTING but maybe you could just link to the site they come from and let people here ponder on an individual basis if they think it's okay to spy on her personal life.
Having said that, Riho bb, I don't think that hair color suits you.