New York City

A tall youth, wearing a Nike hoodie and baggy jeans, with the hood pulled over his head, strolled along the streets of Manhattan, looking around wondrously like a bumpkin from the countryside only coming to the city for the first time.

In reality this youth was the former Nascent Soul demon, Quetzalcoatl, who had been reborn like a phoenix as the unparalleled youth Ao Xisu.

'Truly incredible, mortal technology has undergone a metamorphosis in the time I've been sealed, its one thing hearing about it, another thing entirely to experience it firsthand.'

Ao Xisu pulled back his hood to reveal a deep brown buzzcut, which seemed to be tinged with a rusty red colour.

When Ao Xisu activated his cultivation base to his fullest extent this rusty tinge would envelope his hair fully turning it a blood red, as he activated his powers of slaughter embedded within his body, from the War God and Rage God's powers embedded within him.

After having wandered the streets of New York for a good few hours just taking in the sights and sounds around him, as night began to envelope the city, Ao Xisu spread out his divine sense, searching for cultivators hidden within New York.

With a flash in his eyes, Ao Xisu began walking towards a dingy bar a few streets away from him, having sensed the aura of cultivators within.

Walking through what seemed like a maze of back alleys, Ao Xisu came across a door which seemed to be fused into the shadows of the alley it was in, appearing nigh invisible unless one was looking for it specifically.

Pushing open the door, Ao Xisu walked down the stairs behind the door, before coming into what appeared to be a well lit, spacious speakeasy, straight out of the 1920s.

Amid the music wafting through the bar, and the smell of high quality alcohol, the various people within the establishment all turned to look at Ao Xisu as he walked in.

The bar wasn't empty, but it wasn't jam packed either, with there being roughly 10 people seated at various points within.

Ao Xisu stopped and looked around for a second, considering his options before letting out a slight smile.

'In an ordinary situation I'd probably sit and order a drink, but there are two differentiating factors which lead me to a different decision on my course of action.'

Having said these bizarre words, the various existences within the bar turned their attention fully towards Ao Xisu.

'Who are you? Haven't seen you here before.'

The bartender curtly asked Ao Xisu, frowning from Ao Xisu's bizarre words a moment ago.

Ao Xisu started to grin so widely it seemed as if his face would split before he started laughing.

'Ordinarily, I might introduce myself here, or maybe even try and make conversation to get the information I want, keep a low profile, that sort of thing. However, as I alluded to, since I'm going to be making... a bit of a fuss, while I'm in New York, I might as well do this in the most efficient way possible.'

At this point the cultivators within the bar had started to prepare themselves, sensing a distinct sense of conflict from Ao Xisu's bizarre words, and from his suddenly rising aura.

A man sat in the corner, the only one who remained nonchalant all the while, suddenly turned towards Ao Xisu at this moment, his eyes widening first in shock, then in abject horror.

'This aura, your, your, no fucking wa-'

Before the man could even finish speaking his head exploded, with his now headless body collapsing to the floor in a heap.

'I didn't expect to see a Foundation Establishment cultivator here, considering the lowering of quality of the cultivation world at large reported to me, but I suppose it makes sense this being New York and all, supposedly the location of the second largest base of the Vatican's Holy See aside from within the Vatican itself.'

As Ao Xisu murmured these words to himself the cultivators within the bar had already gone from preparation to abject hostility, preparing themselves to fight Ao Xisu, however after hearing his words they went pale.

'Mathers was a Foundation Establishment cultivator? No wonder he appeared so unfathomable, but if thats true this boy must possess power at the absolute peak of the Foundation Establishment Realm, or maybe even, maybe even...'

The bartender was a spluttering wreck at this point, unable to even voice the thought shared by all the cultivators within the bar this moment, that this boy might be a Golden Core Cultivator, someone at the peak of the world who could sunder the sea and split mountains with a wave of his hand.

If these people knew that Ao Xisu actually possessed the power of a Nascent Soul Realm existence, despite merely being at the peak of the Foundation Establishment Realm, who knew how shocked they would be.

With another wave of his hand, before any of these cultivators could come out of their shocked stupor, Ao Xisu directly eliminated all of them, except for the bar tender, causing the beautiful bar to be bathed in blood.

With a slight smirk on his face, Ao Xisu waved his hand, causing the now limp bartender to fly into his grasp, the bartender so shook and fearful that he didn't even dare to breathe.

'I happen to have somewhat of an issue with the Holy See, if you could point me in the direction of their establishment within this fine city, I'd be ever so grateful.'

The bartender was so fearful he didn't respond. With a wave of his hand Ao Xisu severed the bartenders left arm and leg.

'Now. Please.'

Awoken by the pain and fear, the bartender spluttered, 'St Patrick's Cathedral. P-please, leave me alive sir I'm merely a late Qi Condensation stage cultivator, please sir don't lower yourself to m-'

Before the bartender could finish his sentence he also exploded in a rain of blood.

Ao Xisu snorted, 'Your bar has been tainted by that sickening aura, that holy aura of those hypocrites from the Vatican. Moreover, in the chaos thats about to ensue tonight its a mercy to not have to witness blood running through the streets of New York. This world's been quiet for too long, these people need a reminder that before the might of a true powerhouse they cannot run rampant.'

Leaving behind the bloody bar, Ao Xisu began his journey towards the Holy See's, also known as the Catholic Church, primary base within New York, St Patrick's Cathedral.

Around 10 minutes later, having walked slowly and methodically through the streets of New York, Ao Xisu came face to face with an old building, amid the high-rise buildings around it it seemed out of place, yet maintained a sense of medieval beauty in contrast to the modernity around it.

'The Holy See, thousands of years ago that old fucker Peter, your first pope, sealed me, now its time to reap what you sow.'

Walking forwards slowly, with each step causing Ao Xisu's momentum to rise at a rapid pace, he passed through the threshold of the grand old church in front of him, prepared to begin his vengeance upon the Holy See, and let blood run through the streets of New York.