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？

Looks of relief graced the faces of the father and daughter — or maybe grandfather and grandchild — pair. The Door of Conundrum had always maintained its ground that there was no knowledge too sacred or profane to be learned, hence a Great Sage possessing a certain degree of forbidden knowledge was not out of the norm.

The Duke started to feel lucky that Baiyi wielded a certain forbidden power that had now become the only power that could save him, so he stated, "Of course I believe the Church, and I believe in the Apostle, and most importantly, I believe you, Master Hope."

'Gosh, the Cleric's lasting reputation sure was the best tool I have ever had! Of course, the man himself has become corrupted that he has no dignity left at all!'

Don’t Scare Yourself Shitless, Okay?