[quote=@NarayanK]
Yukihisa forces his opponents into using different fighting styles against him. Against people and the likes, Yukihisa mixes various strategies and fighting styles to utilize a single hybrid battle style that can fluently transition from one strategy to another.

As a team member, Yukihisa boasts a flexibile role in his team, as he can perform different kinds of tasks despite only having a sword. 

Yukihisa will never accept an “assassination mission” of any kind, and will always try to show himself to his opponents before he begins battle.

Between a lustrous woman who pretends to need help and an aged man who desperately needs someone who could stand for a good cause, Yukihisa would instantly choose to help the man without any hesitation.

As a team member, Yukihisa strives to help any inner turmoils his allies face, regardless of how light it is.

He tends to think outside of the box

though he may branch away from certain rules and orders given to him to do what he believes is just.
[/quote]

Everyone seems to have covered concerns regarding his capabilities but I wanted to say something about him as a character. This is just my opinion but I think he's too perfect both in combat and as a person in general.

This basically says that he can use a multitude of different battle styles so he is never predictable, he can perform almost any role within his team, he's infallibly righteous always doing the right thing no matter the cost, he always helps his teammates through anything they're going threw, he's independent and spontaneous and not afraid to challenge authority to do the right thing. Congratulations you've just constructed the RWBY equivalent of Superman.

He's got to have some flaws or something, some personal trauma, weakness in his fighting, a breakdown of his ability to communicate with other people, anything really but he can't just be perfect.