So I'm a Spider, So What?, Vol. 15 (light novel)

After one final battle against the elves, the Demon Army emergesvictorious! With
Potimas defeated, the next task is to save goddess Sarielfrom the System, but
administrator D keeps getting in the way!!! For her ownamusement, she activates
World Quest and pulls absolutely everyone into thegame. Now what are we gonna
do?!