My Lovely Guardian | GOT7's Yu Gyeom Fan Fic

I was born to be a guardian, a guardian angel. No one can see me, I could be considerated as a ghost. But I'm not dead since I was never really alive. We, angels, protect humans, we all have someone that we take care care of. The person I have to guard is named Kim Ha Neul. I was born in a pity life, after my dad's de...