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...

Mikami Arashi, a high school student, has excised his first malignant tumor, and is now an official member of the illegal organization, Black Label....

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...

Mikoto knows of the existence of a malignant tumor and rushes off alone to excise it, without waiting for the rest of Black Label. However, she runs...

She can sing, dance, and act. A top idol, Nashida Oriha, is also a member of Black Label. She spends every day riding the world of evil. She's slated...

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...

Sagiri Yuko, Tsurugi Miki, and Sayo Hitsugi, Ampule Zero, and Arashi, Mikoto, and Oriha, Ampule One, go to investigate a cargo ship that had arrived...

Hitsuji loses herself and goes on a rampage, and her friends, other members of Black Label, find themselves raising arms against her. However, Arashi...

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...

Black Label goes over the information they have thus far in order to figure out what's going on. It's clear there's a new malignant tumor out there....