heaven's secrets hvn's secret

"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?