The devil's soulmate is a singer (Karma x SingrReader)

Nikki Atama was an orphan... they never found a home but they found a family in the friends they made at the orphanage. When they were all 12 they started a band known as The 7 Layers of Hell. They hit it big and for the last year, they were traveling on tours but decided to move back to their home city, Tokyo for their final year of Junior high. They attend Kunikigawga JH and requested to be in e-class to avoid possible attention so their identities wouldn't be leaked. When she arrived she saw a familiar boy wearing a familiar necklace...