>>282033006
Nightmare and Mutsumi comparisons would be surface-level, their alters don't share any similarities other than being the stereotypical crazy personalities. It's Shalem: (parroting what I saw on Chinese social media) both have childhood friends who want to become gods, both maintain a detached/calm façade despite experiencing severe psychosis, both suffer from emotional neglect and "shut down" under stress, etc. Not to mention the entire Ave Mujica collab is so reminiscent of IS2's aesthetic (gothic horror with schizo elements & singing) that people speculated it'd feature the Crimson Troupe prior to its release.