Phantom of the Idol manga volume 4 features story and art by Hijiki Isoflavone.

Distraught from the realization that Yuya is willingly possessed by the ghost of Asahi--and that their dynamic duo is really a trio--Kazuki enters a depressive slump. For the first time, Kazuki is on hiatus and Yuya is mixed about the newfound responsibility of leading ZINGS's official activities. Meanwhile, Chikage Yura, Asahi's former group leader and now protege of the spiritual arts, is ecstatic about the possible breakup of ZINGS. Will ZINGS survive? Or will Yuya's cake made on live television fall flat?