Shirayuki Noa

A self-proclaimed angel, she was sent down from heaven to protect the Demon Lord's reincarnation, Riku.
Despite her youthful appearance, she's actually quite a level-headed and responsible girl.

She approaches her angelic duties optimistically, and always treats those she meets with genuine sincerity.
Being an angel comes with its drawbacks, though. Most notably, a significant lack of contact with human society.

Noa makes the most of this, though, and even finds joy in consuming the various products of human culture she encounters―from anime and manga, to all the delicious food she can get her hands on.
As you'd expect from angel, she's a very pure-hearted girl, so she can't handle dirty talk very well.