The words of Sukuna made Ishtar's heart soar. "I am glad you understand. Being reasonable is the best course of action!" that was what Ishtar had to say. So he did understand! That was what she was waiting for, all his attention should be focused on her, and now that he was on board all that was left was getting rid of Kur. Of course, while she had this idea in her head, Ereshkigal knew better. She knew for a fact whatever utterance this man had coming for her afterwards was very negative, and she was rewarded. He aimed to give Ishtar the worst time possible. Ishtar wasn't expecting this, and looked immediately sullen, "Wait, what? That's not wonderful, you can't!" she managed. Meanwhile, Ereshkigal managed to only just stifle a chuckle. "Chehe~" she couldn't help it after all. It was funny watching Ishtar fail to realize when she should be quiet.
It seemed that Sukuna didn't necessarily understand completely why Ereshkigal wanted to keep Ishtar alive for a bit while she tried to separate the green haired goddess from a power she'd never truly understand. But her point was eventually made, it seemed that Sukuna was a man far older than Ereshkigal. She'd take his advice into consideration before doing anything in particular. He claimed that Source Magic used to be a thing, but wasn't really any longer. He said that even when it was, no one had attempted the sort of thing she was talking about and he said she should finish her own Source before she moved on to trying to do something to someone else. He explained how very painful such a thing would be if she failed and why it was fine to him if she attempted it regardless. Sukuna for his part in this, also lightly blamed Ereshkigal for the feeling in his chest. "Eh? You can hardly blame me for that... you're the one who woke it up!" she huffed childishly. If she was being honest, her own chest didn't feel particularly comfortable, "It feels like something is spinning in my chest right now, but like in opposite directions. You have an active Source right, but yours doesn't normally feel like anything, right?" she said explaining the feeling. It wasn't painful to her but she also couldn't feel pain right now. This was a complicated issue, if she could get to know and understand Sukuna's body a bit better, she could likely figure out how to calm her own Source down enough to do everything she wanted to do.