<p>Not a lot is ever explained in the anime. (Hopefully, Season 2 remedies some of that) </p><p>I think Rui is a self educated guy, he learned coding from other hackers and managed to make his own software to build his social network empire, which made him rich enough to own that apartment we see him in. </p><p>It's not that far fetched an idea, as kid genius prodigies who make millions do exist in the real world. Heck, just last night I read about a 17 year old kid who got a triple major in college and will go on to complete med school at the age of 22 </p><p>He's also trilingual and managed to keep his identity hidden from the world. </p><p>Not an easy thing to pull off in The Internet Age considering world governments wiretapping the web, credit card transactions, security cameras, GPS, biometrics and everybody and their mother having access to a camera small enough to fit in their pocket to be a paparazzi mob when he walks down the street. </p><p>I think that's why he dresses in drag, it keeps unwanted attention away from him and he's still in puberty so people can't tell if he's a boy or a girl yet if he hides it well enough. </p><p>. </p>

<div class="quote"><i>Aldo The Fox wrote: ...I think that's why he dresses in drag, it keeps unwanted attention away from him and he's still in puberty so people can't tell if he's a boy or a girl yet if he hides it well enough.</i></div>
<p>In anime, a tiny domino mask can hide your identity. ;) </p><p>According to the anime, he wears "too much makeup*" when dressed up, and obviously none after he bathes... but us here in the world of 3D can't tell the difference. This makes me think that anime characters have a perception of each other that us mortals do not have.
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</p><p><small>* And yes, I did test this theory by buying a Rui outfit from Alibaba and then getting someone to help me with makeup.</small> </p>