Sixteenth Basket of Mantaos

Imagine being forced to live, after death, as incorporeal bodies trapped in a vast space of nothingness for thousands of years, with nothing to do but exchanging past memories with other cohabitants (read: weirdos).  Everybody wanted out, but there was no way to leave the Void... 
Until one day, a young man was finally summoned, as a powerful but reluctant mentor, by a bubbly and motivated but completely naive young girl. Baiyi, finally out of the Void, was the only one who could save all of the other 32 souls from their prison and his summoner might just be The Key to their freedom.
However, Baiyi had to use the techniques and abilities the other souls had taught him throughout the years, and together with his own extensive knowledge of anime and game tropes from his shady and dangerous past as an otaku, to face the biggest challenge of them all: training the clumsy young girl he was forced to partner up with… into a competent sorcerer!

EndlessFantasy Translation 

Why Did You Summon Me？

Angels were considered invincible. They had unfathomable strength, reflexes, and destructive capabilities. It took one angel to force meatball mode Baiyi into a corner. The only weakness angels had was their lack of battle experience.

The Voidwalkers did not agree with this assessment, though. Angels, the Voidwalkers argue, only seem invincible because humans did not know much about them. Not only were angels cloaked in mystery, but they also commanded Divine Energy — an unfathomable energy that trumps the energies that humans could wield.

Saving Noirciel had provided the Voidwalkers a glimpse into these mysterious beings. The information they received from the former High Priest deepened their understanding of angels.

You Actually Ambushed Us?