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 stood at the center of what resembled a command room, which was filled with hovering holographic screens depicting the battlefield from different angles. The screen in the middle of the room showed a simplified schematic diagram of the battlefield, which showed that the two battlecruisers had released all suited sorcerers into the field.</p>

<p>The goal of these individuals was to carry out the first few onslaughts. They would bury a concentrated number of magical bombs around the enemy's soldier's camp. When the battlecruisers launched their aerial bombings, these enemies would find their reinforcements' paths blocked and sabotaged, therefore plunging the enemies into more chaos. The sorcerers would also be responsible for eliminating the enemy's sentries and direct the target of the bombings, as well as cut off their foes' retreat.</p>

We’re Known To Be Very Kind To Our War Prisoners