Chito and Yuuri board a train that runs below the forgotten remains of the streets above and take it to the end of the line. When they finally reach the surface

Civilization is dead, but not Chito and Yuuri. Time to hop aboard their beloved Kettenkrad motorbike and wander what's left of the world! Sharing a can of soup

(Volume 2) Titus and Yuri continue traveling in a world where the civilization collapsed. What did the two who ventured to the upper level of the city find?

Chito and Yuuri have arrived at the highest stratum, but their journey will not be over until they reach the very top of the city. Along the way, they continue

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