In their continued efforts to restore the world after an unknown event turned every last human on Earth to stone, Senku, Magma, and Chrome descend into a dangerous but real-life treasure dungeon to get a rare mineral to recreate the greatest modern "weapon" of all time--the cell phone.
General Note
Printed Manga-style; book opens from left to right. Pages are read from right to left.
"First published in Japan in 2017 by SHUEISHA Inc., Tokyo"--Copyright page.