Touring After the Apocalypse, Vol. 2 by Sakae Saito

Youko and Airi?_Ts next stop is Umihotaru, a rest stop in the middle of Tokyo Bay famous for its nighttime view. But with the Aqua-line tunnel from Kawasaki flooded, they?_Tre forced to take a huge detour all the way to Chiba. On the way, they make a stop in Akihabara to investigate a mysterious radio signal. Could someone still be alive there?_??
Binding: Paperback / softback