Lets get some information filled in on Mizu. 
Age: 20
Bio: Cousin of the deceased Mio Ozaki
Description: Has long black hair, Hazel to almost orange eyes, wears red sunglasses when not in school and a tight black dress on most occasions, other than school when she wears a black spaghetti-strap top with a red miniskirt. her face is almost Identical to Mio's.