The Earth had died, and its entirety had been reconstructed with clockwork. Three weeks after the attempted purge of Kyoto Grid, Marie received a mysterious transmission. She, Halter, Naoto, and RyuZU head toward Mie Grid, to investigate; however, what they find is something none of them had expected! "Big sister...please...destroy me" The thrilling second volume of the gearhead fantasy set in motion by Yuu Kamiya x Tsubaki Himana x Sino!