Girls' Last Tour, Vol. 2 by Tsukumizu, Amanda Haley (Translator)

Distant lights illuminating the darkness pique Chito's and Yuuri's curiosity, so the two hop aboard their beloved Kettenkrad and head for the horizon. What they find may not be what they were looking for, but the surviving fragments of civilization are enough to keep them going. There's no telling what other strange surprises lie in store as their journey continues...