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>Baiyi made to leave, but to his horror, the Archmage dragged him to his living room. It was nothing like the normal living room it was once; now, the room looked like the mission command room of a military base. Baiyi's small table and couches had been turned into metal mission control consoles and operation panels that were silver. Many holographic screens hovered above these consoles, displaying data and stats of elements in the other world. </p>

<p>The living room was filled with futuristic equipment, and for a second, Baiyi thought Isythre had changed its "world setting!" Emulating future tech using magic was a strange workaround, and Baiyi planned to comment on this; however, the Archmage, who seemed rather impatient, slammed a controller into Baiyi's hands, interrupting the Fifth Walker's thoughts. </p>

You're Really Going to Do It?