so, this is a series happening in an angel world. the main character is a hybrid(her name is mai), and since everyone (not everyone but yeah) hates hybrids, she tries to hide her secret. but... one day, a student looking like a demon arrives, what will mai do??? story of ONCE UPON A TIME (ah the classic): about 2000 human years ago, demons and angels had a war. demons kidnapped the angel princess and threatened the angels to give the powerful spell book of theirs, but instead they had a war, and angels won (mostly, it's a tie but demons had MUCH MORE LOSS) and reclaimed their holy land... however... is this the story? the truth is, they have been fighting the lands for long, and the angel king faked and erased lots of memories to gain things (yee he was spoiled)