Trying to go after "the Butterfly," Michiru and Koyomi end up finding themselves in an offline meeting for killers! Chika, Shito, and Shiba are running after them! With "Yomi" awakening on the spot there, will it turn into a free-for-all fight? The heat rises more, and our accelerating story takes an unexpected turn...

Why, even mean-spirited, ill-mannered, money-grubbing, undead zombie hunters have families! Chika's overly affectionate dad and his cellphone-happy little sister drop in on the Z-Loan office, much to our anti-hero's chagrin. All this familial silliness lifts Chika's mood, but also throws his partner's dark past into relief. When a horrifying, trust-shattering secret is revealed about Shito amid whisperings of his ties to a powerful mafia group, will the Z-Loan office ever be the same again?

When the Z-Loaners learn that Shito's been kidnapped by a mad scientist, Chika, Michiru, and the group's newest addition, the axeman Sotetsu, don't hesitate to rescue their tall, dark, and grumpy friend... even despite the recent, shocking revelations about his past. The intense battle that ensues leaves the group exhausted, and Koyomi decides that the only cure for these blues is some all-night karaoke!

Z-Loan's forced to duke it out with A-Loan to see who can earn ten million yen first! But just as the challenge gets underway, the illegal zombies are nowhere to be found! Just what is going on?! Michiru hones her Shinigami Eyes under Zarame's tutelage as faces from the past make sudden appearances, with some even joining the team!

Under Chitose's watchful eye, cabin fever sets in as Z-Loan and A-Loan find themselves stuck inside the school with no way out. Between the threat from the zombie horde just outside and the constant bickering within, neither team is safe from the ARRC, each other, or even themselves. And when one of Z-Loan gives in to the basest zombie instincts, will Michiru's power be enough to bring her friend back to the land of the living?

Still trapped inside the ARRC's alternate dimension, Shito careens toward his partner as Chancellor Shimotsuki's ragtag group of rescued A- and Z-Loaners hijack the shinigami train and change its direction to find Chika. But when Michiru, separated from the others, lands herself plop in the middle of enemy territory, will Shito and Chika manage to regroup in time to come to her aid? The Loaners' showdown with Chitose and Caramelo of ARRC is finally here!

Tokyo is now a dark city where humans and demons live in a fragile peace after years of fighting. However, something odd is happening and some demons are starting to lose control and go back to their violent ways. A mysterious drug known as "Zone-00" seems to be behind the changes, and two young students, a demon and an exorcist, may be the only ones who can uncover its secret.

A battle 500 years in the making rages on as the effects of the mysterious drug, Zone-00, takes hold of Tokyo's demon population. Now it's up to Shima and Kujo to take matters into their own hands to restore order before it's too late. Are they strong enough to prevail, or will they need to enlist help from other creature kind as they close in on the mastermind behind the mysterious drug?