I forgot the title to this manga and I've been looking for it for a while now!

It's a oneshot told from the perspective of a boy who was an angel and was born human because some great demon/succubus was going to awaken in a girl.So the angel, now human, grows up as a childhood friend to the girl who will 'awaken'. I remember the girl was really tomboyish with short hair, so the guy was kind of skeptical of her becoming some great succubus. Anyway she does awaken and the guy realizes he's in love with her and saves her.

From what I recall it was just a short oneshot, but this manga has been burning in my mind for months! Please help and thank you in advance!

It's Tohohoyo

DONDAKEE!!

It is! Thank you so much!!