Ivan's magic power was attributed to be chaotic. The change in his magic power's nature wasn't natural, but it became 'inherent' as a few thousands of years passed.
Being sealed within for millenniums, his magic power was soaked in [Chaos] that had no ways out and without any other actual option, it became one with his magic power, devouring and amplifying itself over the years.
Just like colours that become white if portions leaned towards lighter shaded colours and become black upon the portion leaning towards darker shaded colours; [Chaos] was the mixture of Omni-elemental magic power that leaned towards the darker side.
[Chaos] could be called [Unholy] magic power if needed a better word for easier understanding.
After spending millenniums in the [Five Worlds Of Hell] where [Chaos] was abundant, Ivan's magic power natural became one with [Chaos], and as if that wasn't enough, Ivan ate and devoured [Authorities] of the [Demon King] ranked [Demons], acquiring all [Seven Deadly Sins] in the process, even though it wasn't intentional.
And all the [Authorities] of the [Demon King]s used the power of [Chaos] to be wielded appropriately, unless the whole structure of the [Authority] was changed to be adapt to other unique powers; but of course, changing the entire structure of an [Authority] while also keeping its essence same was easier said than done.
Now, Ivan's current magic power had the inherent 'destructive' nature of the [Chaos] merged with the 'deadliness' of the [Seven Deadly Sins]. If he doesn't have high enough [Will Power] or he isn't strong enough to resist his [Sinned] desires, he wouldn't be any different from a mindless demon.
Understanding the severity of the situation, Zilla's pupils dilated extremely when Ivan made an hand sign that said 'The [Sins] are acting up....' uncaring for the depressed, envious, and bitter feelings oozed by Nu, who stood next to them, gazing at them converse with each other as if she didn't even exist.
Maybe Ivan too felt Nu's not-so-hidden feelings, he turned to face her, ruffled her hair as he followed after S-23, walking out of the [Veil] casted by Zilla, who dispersed the spells soon after.
*
Nu, who took pride on the matters of knowing HER His Majesty Ivan, had noticed since the moment she jumped out of his shadow that he wasn't the His Majesty Ivan she took pride in knowing about.
Instead, it was the [Damned], who apparently was acknowledged by HER His Majesty. The [Damned] named Zilla, who similarly appeared out of nowhere, knew more about Ivan than Nu, who had been His Majesty Ivan's personal maid for thousands of years!
She had even seen the birth of all 13 young masters, the kids of His Majesty Ivan, and even his relationship's progression with Her Majesty, Nara.
And,
If that wasn't enough,
Her strange LOVE-LIKE curiosity marred emotions that were directed at His Majesty Ivan was known by everyone in the [Unknown World], including Her Majesty Nara and His Majesty Ivan. Though the reason she hadn't made a move blatantly on His Majesty to know more about him was due to the incomplete echoing images in her consciousness that made her hesitant, while her unhidden LOVE-LIKE curiosity marred emotions had always been in the open.
His Majesty Ivan had naturally noticed her hesitance and had asked her take her own time to explore her own feelings yet she had always been by his side, learning about him as the days passed, gradually breaking past His Majesty's mask of the [Sovereignty] and experiencing his playful side which named her "his" sly maid;
She did many things as she explored her own feelings, yet;
By the time she named her feelings, His Majesty Ivan decided he couldn't take it anymore and also decided to do his best to leave the [Unknown World], "his" [Cursed Land], that slowly and painfully killed him from the inside.
And then, as we know, he left the [Unknown World], was forced into a place that none actually believed to exist, and by the time she had returned next to him,
His Majesty Ivan that she knew, was no longer the same.
He, who had spoken not-so-much with anybody except for her, Her Majesty Nara, the young masters, and the young ladies, had began to converse casually with the [Damned] named Zilla, who seemed to have somehow managed to gain the trust of His Majesty Ivan.
The longer His Majesty conversed with Zilla instead of her, the more jealous, envious, angry, and sad she became while the former two emotions were directed at the [Damned], who could do what she couldn't, the latter emotions were directed at herself, since she couldn't even do what a [Damned] could.
Burdened by the overwhelming emotions Nu felt, her fierce gaze snapped to gaze at the back of His Majesty Ivan, who was following after the robot amidst the confused gazes of the crowd, right before her gaze snapped to glare at Zilla, who had anxiety marring her dark skinned face that had grown darker at His Majesty Ivan's hand signs.
Though her emotions couldn't really be named love, she didn't like the fact that there was somebody else that knew more about His Majesty, other than those he himself choose and which she acknowledged inwardly.
"Zilla....." Nu called out hoarsely as a beautiful glint of resolution flashed in her obsession marred gaze.
"Eep!?" Zilla yelped in surprise when she heard Nu call her by her name as she flinched slightly and took a step back while her fingers grew thick claws which seemed to be ready to claw through anything and everything that stood her way.
But,
Much to her surprise that turned into shock,
She gazed down at Nu, who was bowing her head to Zilla whom she had been calling [Damned].
'I don't want to and hate to admit it, but....' Nu muttered in her mind and continued,
'..... this woman, no, Zilla knows more about His Majesty Ivan than me.....' She concluded, and
"Please....." Nu muttered and bit her lip, stopping herself mid-sentence.
"... please help me learn about His Majesty Ivan, whom I do not know....." Nu pleaded.
Zilla was stunned to know that the stubborn and sly snake-woman she had seen from the moment they met was so determined to learn everything about Ivan, whom Zilla had been with for over thousands and thousands of years since the moment she gained a consciousness and a sense of self.
But,
[What would I get in return?] Zilla let her thoughts be drawn by her blackish pink magic power that floated in a thread-like manner in front of Nu, who was bowing her head.
Noticing Nu's fluster, Zilla leaned forward towards Nu's bowed head, neared her ear and blew a sensual breath, and
[Do you want to make a deal with me?]
Like a Demon she was;
Instead of reciprocating according to Nu's wishes, she proposed a deal, because
As a demon of emotions, whose strongest emotion was of lust, Zilla felt something strange about the emotions of the woman called;
Nu.