Death March to the Parallel World Rhapsody, Vol. 13 (manga)

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...