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？

The Emperor's words caused a surge of warmth to flow through Baiyi. Finally, his master had shown how much he cared about him. His master was even willing to let him become emperor for a while!

When Baiyi entered the Emperor's office, he trembled; there was a mountain of documents atop the Emperor's desk. A million thoughts raced through Baiyi's mind. 'The Emperor is not trying to use me, right? He cannot possibly be that black-hearted, can he? He cannot be that nasty, right? He cannot—'

"Sire, this is Lord Rugel, the royal clerk; he will lend you a hand with these documents," said the attendant that ushered Baiyi into the Emperor's office.

An old man with snow-white hair and a white beard stood beside the Emperor's table. He was so old and fragile that Baiyi wondered if he would pass on at any second.

Tired Already?