World's End Harem: Fantasia manga volume 15 features story by LINK and art by SAVAN.

Feeling responsible for the fall of the Kingdom of Lancia, Arc surrenders himself to the Madilis Empire, all part of a plot to assassinate the emperor once and for all. Meanwhile, Retta has snuck into the capital and added yet another powerful woman to his harem. Now he makes a plan to rescue Arc by infiltrating Deutius's Imperial Sorcery Unit, but General. Shutygen—the man responsible for the death of Retta's father—stands in his way. Not only that, but Shutygen has gained magic power of his own!