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？

Although the gigantic hammerhead shark plushie did not punch as hard as it had back in Marle, it was able to buy enough time for the Voidwalkers to escape.

The Giant Grandruler let out an angry bellow. It was almost overwhelmed by the desire to crush his enemies, using all his undead creatures. However, it was rational enough to realize that such a move would end up being a grave mistake. Hence, it ordered the undead to go back to capturing the humans' cities. He remained at the destroyed black castle and summoned his vassals back.

However, only two returned to him.

The Hitman Walker's Dignity