[Machine Translation] The latest edition of the popular otherworldly summoning fantasy! Diavlo gave Rem and Shera a "wedding ring". It was supposed to be a happy married life with them ......, but Rem's ring was paired with Shera's! This situation, where two people are getting married without their knowledge, must be dealt with before the truth is revealed! Taking Sylvie's advice, I decided to collect materials for the "wedding ring" with her. They set foot in the "Dark Green Cathedral", but what awaits them there is...?