heaven's secrets

"congratulations y/n you are one of the few mortals to get into the ANGELS AND DEVILS ACADEMY." y/n is dead. she was murdered, now she wants o find out why and by whom while trying to adjust in the new world of angels and devils in training and her love life starts to become a mess. who will she choose in the end? will she find out the secret of her murder? but most importantly, will she discover the HEAVEN'S SECRETS?