Personally, Imuri cursing Lisa like this is distasteful. Yes yes Lisa killed Joshua and all but the fact that we don't get any of Imuri's internal distress or conflict about her remorse towards Lisa and their recently reconciled friendship is what make this disturbing. If this is intentional then fine, it's entirely in character for Imuri to focus solely on her idea of one and only love above all else, which is what she also does later the same chapter with the massacre, and like how she casually threw away her friendship with LeahBarb the moment their stances on Joshua stop aligning. Imuri has a tendency to make one thing her entire identity, a lot of her self-worth is tied to being the femme fatale so she needs to make something equally grand to eclipse it. Her dismissive attitude can be read as her totally immerse in her new role as Joshua's lover to ignore her surrounding and escape from her guilt (Imuri has quite the experiences in this field, meanwhile Joshua tried to make being Imuri's boyfriend his new identity to replace his church's personal attack dog status and faced heavy reality check). But if it's not then again, damn this arc's writing is really depending on how self-aware it is and how much all of this is intentional.
On that note Imuri with the wish for a love to change her entire being got it and remains relatively static, while Lisa who says what need to change is the world has changed her complete essence to the point of being reborn. Imuri's a demon after all, and the demon lords have demonstrated that demons are almost completely incapable of change. Even Belphegor who gets the closest to it shows that he's still a misogynist.
