I actually like kuu's hair long at short. She's gone back to the same style she had in 2007, which I loved! I think it's just in that picture it looks like the roots need dying and it looks a bit frayed, just needs some treatment to it. She always uses extensions anyway.
You saw her hair was long all the time in Black Cherry era when actually I think her hair was chin short, but she wore extensions all the time.
I don't think I've ever disliked any of kuu's haircuts hahaha.