Death March to the Parallel World Rhapsody, Vol. 16 (light novel)  (English, Paperback, Ainana Hiro)

After overcoming the coup d'etat airship attack, Satou and his friends arrive at the Royal Capital. Before the group can enjoy the sights and sounds of the city to the fullest, however, one of the Eight Shiga Swordsman catches wind of Satou's activities and challenges him to a duel!