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？

<p>Every large government-approved organization was required to have at least one or two opulent, monumental architectural wonders as their headquarters. For example, the Warriors' Association had the Hall of Fame and Valiance; the Alchemist's Association had the Titan's Core; the Doors of Conundrum had its prized Illimitable Library, and the Church's headquarter was the Temple of Auguries. However, the Sorcerer's Association's Babel Tower and Cloud City were, without question, the most beautiful and majestic of them all.</p>

An Unexpectedly Smooth Success