Black Label rids the city of evil by severing the malignant tumors that have made their home there. Suzue Konomi, a detective, has looked into their organization, and finds herself kidnapped. Her assailants true objectives are a mystery, and more than just one group is after her. Will Black Label be able to sever the evil?
It's time for the show. Bad guys have hijacked the TV studio and taken the idols hostage. They've asked for a large some of money, and if they don't get they, they're going to force their hostages out of the 18th floor down to the ground below. Meanwhile, Oriha manages to slip away, and learns of their true intentions...
Kiba Mikoto, a student at the same school as Arashi, fights evil along with him part of the organization, Black Label. Mikoto runs into a mysterious transfer student, Hizaki Chikage. Mikoto learns a lot about Chikage, and the two of them get very close. Meanwhile, a string of incidents happen where citizens are being burned to death...
Mikami Arashi, a high school student, has excised his first malignant tumor, and is now an official member of the illegal organization, Black Label. He took on the role of executioner because of what happened nine years ago during an act of terrorism against an international medical conference. And now Black Label moves to save a victim which has been kidnapped right after they saved them the last time.
A triage is when several people are injured and a system is employed where five different label colors are applied based on the severity and urgency of the injuries, and then the people are treated based on that system. Black is the closest color to death. The illegal organization Black Label, applies these labels of death to criminals that eat away at society, just like malignant tumors, and run operations to stop them.