12 Hour Angel is about a boy named Taro, he's just an ordinary high school student who just so happens to be the target of violent bullying.
He later finds himself with a godlike being protecting him from the torment he has been going through his whole life. But there's a catch... From midnight to midday, Taro is completely unguarded by his protector.
This leaves Taro with so many questions, and he doesn't know if he will get any of them answered.