Thousands of years later, demons have become part of human genes. There is another substance that appears at the same time as the demon spirit. We call it "Little Black"
JOiNT is a demon team that exists in Liyunluo High School. Led by captain Nao Yukawa Wataru, while showing off their skills in the demon spirit competition, they also began to investigate the mysterious "Blackie".
Motto: Don't trust people you know well