Shiro is an 11 year old girl and "NEET". Shiro is a genius at logic and solving calculations, but has difficulty understanding emotions, she rarely shows emotions on her face. 
Her best game is chess, she even beat the god Tet in a game of chess.
Her face is quite cute, and despite her great intellect, she tends to have conversations in concise, short sentences.
She can speak 18 different languages, and would have no problem learning a new one.
Shiro is totally dependent on his older brother.