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？

Much like Bald Wu'ke and co., the other students threw themselves into setting up camps at their chosen locations. Amusingly, that became a chance to show off one's creativity in problem-solving and/or the size of their pockets.

A few had the same idea as Bald Wu'ke's team. They severed a few rocky spikes from the surroundings with their own techniques and built a makeshift fortress around their tents.

Some had managed to procure magical drilling equipment from the Alchemy Faculty prior to the Trial so that they could excavate a large cave out of a sufficiently large rock pillar — the idea was to make set their base one hundred-odd meter above ground much like a bird's nest. This allowed them to be safe from the reach of terrestrial wild beasts, but it also made going in and out of their base quite bothersome.

A Lucky Finding!