Arisa Arsally

A quite mysterious person of unknown age, who is utterly devoted to Sera as her butler.
She has cat ears on her head, but don't let that bother you.
Try to touch them and she'll strangle you.
She's always seen wearing a black sailor uniform, but don't let that bother you.
That's just her costume.
She has a tongue of pure acid, and is not one to mince words.
She also sleeps a lot, often for more than half the entire day.
One could almost doubt if she actually serves any purpose as a butler, but she has a strangely admirable tenacity for seeing to Sera's everyday necessities.

"My ears? Yes, of course, everybody has ears~.
Huh? Whatever are you talking about~? I cannot understand you at all~."