Death March to the Parallel World Rhapsody manga volume 13 features story by Hiro Ainana and art by Ayamegumu.

Satou and company have arrived in Gururian City. All around them, mock battles are a common sight in preparation for the upcoming martial arts tournament. Meanwhile, Wings of Freedom, a demon lord-worshiping cult, is giving speeches all around the area, and sure enough, a horde of demons soon emerges from within the city! Amidst the chaos, Satou and friends rush to the scene, only to find an unexpected guest...