Gekkan Shoujo Nozaki-kun: Manga (Monochrome Version)
Gekkan Shoujo Nozaki-kun: Monochrome Version

One of the reasons why I truly appreciate this anime
is not just because of the comedy part but how
they help anime watchers to appreciate manga artists
who always dedicate their time to make their readers
happy. :)
No Game No Life Posts [2/?]: Sora, Episode 1-3

Abandoned by his parents, Sora is a brilliant NEET (Not in
Education, Employment, or Training) hikikomori (shut-in)
gamer along with his stepsister, Shiro. He does not take life
very seriously and is pretty much a good for nothing gamer.
One day, he and his sister are called into an alternate world.


Sora is tall and thin with spiky brown hair, and constantly
wears a sly grin on his face. Despite being a NEET and a
shut in, Sora is extremely outgoing and confident, and is not
afraid to play games with people face to face, even when
they're cheating.

He is also extremely manipulative - which he refers to as using
negotiating skills. This fits in with his play style as while
Shiro is excellent at logic and computing, Sora can read people
and predict what their next move is, using this knowledge
to beat them. 


However, if he is separated from Shiro by so much as a closed
door he becomes a spineless, cowardly wreck, and only returns
to his former self if he is able to see her. He views his
sister as his equal and partner, but is also protective of her,
shown by actions such as putting his body between her and the
ground when he thought they were going to hit hard when first
arriving on Disboard.


Sora is extroverted and has no problems dealing with people.
While not as intelligent as Shiro, he is shown to have a
brilliant IQ. Rather than computing numbers like Shiro,
Sora can rapidly compute what his opponents are going to do
based on observing their behavior and motivations.


Source: myanimelist.net