World's End Harem Fantasia Vol 15

Arc is imprisoned, and his group seeks to free him. Retta leads a group of rebels planning to rescue Arc as well. Both have built harems, each following its own path. Their contrasting roles—a king and a rebel—set the stage for ongoing conspiracies and rescue efforts.

The story remains focused on the unseen fourth power, which has been hinted at for several volumes but has not yet appeared. As this arc nears its end, changes in power are expected soon.