Do angel exist? Do they in space? What do they look like?

Since i was young, i always read books about angels. From what i know, they are only myths. My favourite story is 'The Harp' which is a story about 2 angels comes to Earth in search of the last queen legacy. The legacy is the only one who can play the magic harp which can save the planet. She has the sweetest voice an angel could have

Hmm, it sounds like me but the problem is angels are just myths.

Have you ever accounter with an angel before? Yes? No? Well in this story, myths becomes reality but some parts of the story are twist in this fanfic