Had Ereshkigal been devious in throwing the newest version of herself to the wolf that was Sukuna? Maybe just a little. She'd found that entire situation to be a bit overstimulating already, and since she knew the effectiveness of his mana would trickle down regardless, she thought to let her newest self have the full breadth of the experience. That being said, that young young version of her, seemed to be very clear about her wants and desires and had no problem facing them nor any problem whatsoever differentiating the idea of what she liked from the sort of trash that Ishtar was.
Speaking of Ishtar, she was getting one more lesson she wouldn't really understand. She didn't know about the connection between 'Mana-transfer' and sex. If she was ever aware of it, it'd been something long since lost from her brain. She looked for men with potency, big dicks, big muscles and power, political and otherwise. Even so, her actions were frowned upon. Silence. She was a person of bad reputation so obviously, those things weren't related right. And what else? He was referring to Kur as his slut, and she was to get it right? Did that mean, he hadn't chosen some more important title to give her? Did that mean she'd been bound to him like an animal? Yes, that was it. He was doing all this talking and showing her all of these things, to prove that he was the man in charge here, and no one else. YES! It all made sense. She obviously was being put down so she'd know her place below him and then... he'd get rid of Kur and place her where she belonged, restoring her now decaying form to all of its glory!
Just the same, that extended tongue of Ereshkigal's other face was treated to a steady influx of mana. "Sia hepd unnpeb yarv," she murmured. She could enjoy this here and now knowing she wouldn't be taking it from anywhere else. This man was hers, as much as she was his, and as such they should indulge in each other. Such a glutton, was the girl who was formerly known as Kur. She'd taken in so much mana, allowing it to travel over her tongue. She'd indulge in the sensation it caused her brain, she'd enjoy the physical sensations of being plowed, she'd even enjoy the constant put downs of Ishtar. She was 'his slut' as she understood the term to work in this case. It wasn't always derogatory. She opened her mouth to speak and suddenly it was full of Sukuna's cock. Those violet eyes of hers widened as her diamond shaped pupils pulsed and the rings around them seemed to spin. Her tongue lavished attention on his shaft as he shoved himself inside, as if she was trying to further milk him. Hungrily one could say, the goddess of death acted hungry. He did like it when they choked earlier, so... she'd do that here and now. All while Ishtar knew in her soul that she was still the one, still chosen!