[5][6] Viz Media licensed the manga for an English-language release in North America, first serialized in Animerica Extra magazine and later published in graphic novel format.

But suddenly, Tokyo suffers its greatest earthquake since the first quarter of the 20th century, and the landfill liquefies, creating untold damage in the newly made urban area.

But what they dig up is a plot of murder and destruction—one that wipes out nearly the entire squad and leaves its two surviving members, the fierce tomboy Rei and her cool, handsome partner Uozumi, in a fight for their lives well after the rubble from the quake has been cleaned up.

There is only one place where they can find the work that keeps them alive, and the support so they can start uncovering the mystery that killed their squad: that's in the south-Shinjuku bar called Chicago.

In a column for Anime News Network, writer and cartoonist Shaenon K. Garrity listed Chicago as one of her favorite "badass" shōjo (girls') manga series; she stated that "virtually every page [of Chicago] contains something more incredibly hardcore than you have ever seen from characters with giant sparkly shojo eyes and even more ginormous shojo hair.