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？

Baiyi was a firm advocate for proper child education, and he confidently believed that he was pretty experienced in this field; in fact, he was a veteran. If one were to ask him where this confidence came from... 'could you not tell that Mia and the girls are more well-behaved and more beautiful than ever and that their potential grows consistently, day-by-day?!'

Hence, this little dragon-lady... could not compete with him when it came to child education! Baiyi was very proud of himself. He seemed unaware that there was a problem with washing his daughters' undergarments.

Baiyi's washer spell was very effective. Water-based magic, which was rarely ever talked about, was exceptionally useful in this area. The clothes were completely dry even before the girls were done with their bath; it was even neatly folded. He handed the pile of clothes to Aya and made a request, "Sorry to bother you, but please take these to them."

What Has He Done To You?