Yue is one of my favorites, I think it's her voice and monotone speaking, and when she's nervous she talks too much and gets confused :P, she looks cute, also she's intelligent but doesn't likes to study, I like that :P.
But I also go hyperactive when it's about Zazie, I know it's weird but I like that mistery that she carries, she rarely talks, and there was a time I remember when she comunicated just nodding and pointing :P Also I like her colored scars and when I saw her talking in her outfit she looked cute.
Chachamaru, speaking pattern similar to Yue, her inexpresive face is cute and there where a pair of times when she got nervous and started doing clumsy things, she looked so cute.
Evangeline, what can I say? She's strong, sure of herself, out of care, and when she revels her soft side, it is more evident than with other girls because she acts evilish most of the time.
Sayo, I think she looks cute, the red ayes, white hair, and she's a little nervous

.................(notices)............ok, 3 of 5 aren't human, that means I'm weird right?