Tales of Wedding Rings, Vol. 6

With the help of Amber, Satou and the other Ring Princesses finally head back to Arnulus, where a dreadful scene awaits them. Satou rushes in to confront the Abyss King, but he soon learns the power of the rings alone is no match for the darkness he’s up against. He’ll need his wives to pitch in, so it’s back to Nokanatika for “bride camp.” With her little sister Morion’s guidance, Hime will learn to control the magic power that lies dormant inside her!

Maybe is the creator of Tales of Wedding Rings.