The combination of Souta's mighty blow to the frankenstein monster's foot, and the slice against it's poorly constructed arm served to stop it in it's tracks, with the arm now dangling a little, it needs more work it seems, but it can no longer use it properly. Considering Souta and Wrath were quite close, it's sights were set on Gideon, whose Bullet Hell served to be breaking down it's body. Using it's other undamaged arm, it went for a swing at Gideon, blindly aiming to consume these new targets.
Though it was now essentially unable to move, sitting in place and flailing, necrotic demon flesh seemed to climb back up it. It was also regenerating, although in a kind of gross and unorthodox way, patching itself up using itself. Observing from afar, after some dozen seconds, they noticed it as a total was smaller in size, but was moving ever so slightly faster... This could take awhile it seems. Souta's smash on it's foot though, was the last to properly reconstitute in any way, and even then it now appeared to have a gimpy leg.
Vega's smile never faltered all the way to the blast of fire. As it made contact with him, the same black energy sputtered off of him as it appeared to make contact. He didn't move, staggering, with one foot back, his face was turned away taking that precise strike. The tornado of flames obscured the two of them, whipping up a substantial storm. Wasting no time it appears Ferrus would go in for a strike, but as soon as the two completely disappeared into the swirling flames, it was but a moment before they disappeared again, those observant would notice that as soon as they made contact with Vega himself, they seemed to vacuum up, and disappear into it. Vega's hand was upon Ferrus' neck, his entire body a black shadow with glowing purple veins, the same inky darkness he used to defend with earlier. His voice echoed as he continued to taunt the angel,
"Kuahahahahahaaha! I guess they're right about hot heads, act first, die first". As Ferrus felt the grip upon his neck, he immediately understood what was happening up until now... This black aura... It consumes any form of magical energy. His fire had done nothing. Not to mention... Having drained all that power, Vega himself seemed more powerful, and even faster.
"Still, you've got an impressive amount of power, any other demon would've been roasted to a crisp, but since it's me I just get more to eat", Vega held Ferrus up high.
"Now then, let's see what your soul can offer me", he brought his other hand, dredging it deep into Ferrus. No matter what he did, any attempt to use his fire would just result on him giving Vega even more power. The process was painful, would he die...? Who knew, but it seemed likely. At that moment, Vega would feel a kick at his back, a slicing blade from the Devil Arm Hydra. Sevrin was interfering. Vega turned his head, dropping Ferrus as he pulled out a glowing orb of fire, then crushing it in his hand.
"If you wanna donate to me sooner, just say so. I'll take any donation", he smiled.
Ferrus, laying on the ground, was miraculously, not dead. But the flames he could muster were meager, with a bit of time he can still move to fight but any angelic power he can use was severely limited. But what happened next... Told him everything of what kind of threat Vega was.
Vega smiled as he formed a blade in his hand, but it wasn't just any blade. Although in a dark shade, almost ethereal, and emanating a kind of black and purple fire, it looked exactly like Ferrus'.
"This is a little trick I learned while around demons. You probably know by now, but demons within them hold a manifestation of their power... Imagine my surprise when I found out angels also have something like this", Vega was in control, confident. He turned to Ferrus, just turning his head,
"You must really love this sword, for it to be your soul... Well you must be wondering why you ain't dead, all I did was copy your soul, with your own energy, and now this sword will be part of my collection".
Sevrin seemed ready to run, but he looked at Ferrus... Running now would only arouse suspicion towards him and jeopardise the information he has learned, as they may not believe him, but fighting Vega after he has become more powerful than when they just met him... Was almost a death wish, or at least guaranteed to make him even more powerful, after learning his abilities. Ferrus himself was left with fewer options too. Maybe they can send for help? But who knows how long that may take...