Keiichi Hiiragi

Renowned as a teenage heartthrob and virtuoso violinist, this talented musician possesses the power to fuel Kuromi’s Melody Key with darkness. Though he initially aligns with the villains out of pure boredom, he eventually emerges as the group's strategic leader, often using deception to hide his true motives. Despite his cold and indifferent exterior, he is reluctantly transformed into the superhero Usamimi Kamen, a role he finds incredibly irritating and exhausting.