After God. Volume 7: Sumi Eno

Thirty years after the gods reduced Tokyo to rubble, survivors set out to answer a seemingly impossible question—how do you kill a god?
Japan has been invaded by gods—and they’ve left nothing but death and destruction in their wake. With entire cities now classified as uninhabitable danger zones, Anti-God researcher Sachiyuki Tokinaga is determined to find a way to take down the gods and save humanity. When chance leads him to high schooler Waka Kamikura, the two may just end up changing the fate of the world forever.
After Tokinaga strikes a desperate deal with the god Alura to save Waka’s life, Waka is ordered to return home by the Anti-God Institute. But now that Alura knows Tokinaga’s secret, Waka is about to get caught between these two in a way she never imagined possible.