It is currently the year 2047, It’s been 20 years since angels visited earth to ensure the safety of humanity after devils had attacked. You are enrolled in the Holy Angel Academy where angels and the divine study and train to fight off devils especially the high ranked ones.

One day, you managed to enter the Divine Angels ranks, the most powerful angels to ever exist, and you are currently ranked 20th. You enter your classroom and everyone glares at you, shocked by how young you look.