A unique metal known as "phantometal" is used to usher in a new trend into the hip-hop scene.

Cozmez is a team of twins named Kanata and Nayuta Yatonokami.

Ryu Natsume is a unique member of The Cat’s Whiskers. He doesn’t experience trap reactions when using phantometal and his past is wrapped in mystery. One day, Ryu finds a kitten and brings it home.

BAE pays a visit to The Cat's Whiskers dressing room before the battle; disregarding Allen and Anne's respect for them, Hajun makes a harsh evaluation, but Ryu's brief comment sets Hajun into a rage as he leaves the room.

Akanyatsura are a family full of chivalry. Each of them burdened by the trauma of a certain event, they think of each other as a family unrelated by blood.

Allen finds a rare vinyl from a second-hand record shop; other people also want the same record.