"First published in Japan in 2015 by Shueisha Inc., Tokyo." -- Colophon.
Summary
"Mirai and Metropoliman face off for the first time in the skies of Tokyo. But with his vow to never kill, how can Mirai hope to compete against such a ruthless opponent? And can Saki overcome her demons and become a valuable member of the team?" -- Back cover.
Audience
Rated M, for mature. Parental advisory, recommended for ages 18 and up.