It's actually legit. Here's my reply to a topic asking what anime character reminds you of yourself 5 months ago talking about my sis and I.

Sora from No Game No Life. My younger sister and I are very close. Like Sora and Shiro, we had a pretty rough past with out parents. We're also similar ages to Sora and Shiro (19 and 13 vs 18 and 11). We've bonded over video games and anime, and are super close. I trust her completely. We do pretty much everything together, especially since our mom is never around. When we were younger, we slept in the same bed most nights for safety, and when she gets scared she still sometimes ends up in my room. While not nearly as bad as Sora, I definitely feel like a piece of me is missing when my sister isn't around. I call her pretty much every time I get a break at work, and I found out she was crying the time she missed my call. I'm also not a neet, being both gainfully employed and a college student. I can also relate to Sora having a jealous sister. When mine found out I'd kissed a girl at a dance, she got angry and stormed up to her room. When she came down she (jokingly) punched my arm and said "You cheated on me!". I can also be kinda arrogant (I'm really working hard to fix that) and ruthlessly manipulative, though with my sister I'm completely honest and straightforward. Also, like Sora, I see her as my intellectual equal. She's 13 and has been tested and found to be reading at a graduate-school level of comprehension. She's also one of the few people I know that can beat me at gin. And yes, we've seen NGNL together.