The Ice Cold Girl

Miyuki Suzuki is a new member of the tenth division of the soul society. One of the strongest they have in fact . When she first gets there she is known as the next youngest prodigy of the soul society. Graduating in less than a week from Shiro Academy. Then getting best grades anyone's ever seen in the soil society. Scoring higher than normal shinigami's should. Finally being the smallest and youngest to graduate and being stronger than normal shinigami's.
She's known for her bluntness, and giving people ice cold glares and being extremely cold towards others. And her extreme skill in battle being able to analyze a strategy in less then a minute and figuring out her opponents weakness in less then thirty seconds.
When she is put in the tenth division she is assigned then seat of second lieutenant to watch over the captain which most thought wasn't even possible. But it's not like anything she would except. Somehow then captain doesn't know how to focus without her beside her. So she is assigned to work with the captain at all times and to be with him at all times. What will happen then ??