Disco Clearwater 6: Moonlight Rhythm.. Disco Clearwater, #6

In the sixth volume of the Disco Clearwater series, the chaotic peace of Xanthic Cross is pushed to its breaking point. While Pico handles a literal locker-room bombshell with her signature detachment, Nefarioun finds herself haunted by a ghost from her past...the relentless Lute Hero Heinrich...whose arrival threatens to unearth the life she fled in her homeland. As Nefarioun barricades herself in her apartment, the history of her escape and her bond with the child soldier Pico comes to light.
However, a far more dangerous threat looms in the form of Crackle, a rival genie with a personal vendetta against Disco. With the ability to warp reality and isolate Nefarioun from her protector, Crackle initiates a psychological war designed to break their pact once and for all.