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？

"Mayday, Mayday!" The Engineer Walker yelled when he realized that the sky-riders planned to pull his new scout like a cowboy on a bull. He placed his controller aside and pulled up a holographic screen. On the screen, multiple crosshairs locked onto targets; the Engineer Walker seemed intent on showing off the scout's full capabilities.

He was about to push the square button on the controller, but Baiyi stopped him. "No need for that. It'll be better for us if they bring the marionette to their ship."

"Damn. You're asking me to give up an opportunity to show off my Full Burst Mode[1], man! It took a lot of effort to install new armaments..." The Engineer Walker pouted, but he did, albeit reluctantly, retract the crosshairs on the holographic screen.

A Dying World