Night Hunter
The speaker was the Vastaya residing within Vayne, the Silver Crossbow Bolt on her arm.
In fact, I'm very curious about her stance, and why she's helping Vayne:
"My friend disturbed you while rescuing Shauna. I'm Yasuo, and you are?"
"Are you War Aspect?"
"Yes, I recently succeeded to the War Aspect."
"I'm Luanna, Shauna's friend. Thank you for saving her."
This Vastaya is actually Luanna!
I was deeply impressed by her, not only because of her outstanding appearance, but also because of her special abilities when she was Ascended.
Her Ascended Form is a hybrid of Wind Owl and a human, and her attack methods are both fierce and swift, hence the name Hurricane Luanna.
Conversely, it's like the item Luanna's Hurricane in League of Legends.
"No need to thank me, it was all a misunderstanding. Besides, you seem different from other Vastaya; you don't hate me at all when you hear I'm War Aspect?"
"The War Aspect of the past were all killed by Lord Aatrox. You are merely his successor. I have no reason to hate you. Besides, I despise the actions of the other Vastaya."
"It's wonderful to hear you say that! Perhaps we should raise a toast to our friendship!"
"Wait, War Aspect, you still haven't told me how you know me?"
"It's a long story, so I'll just give you a brief summary, please don't interrupt me..."
I told Runaan everything from the moment I entered the Ascension Realm, through Sivir's ascension, Azir's resurrection, my meeting with Nasus and others, to Aatrox's appearance and Azir's betrayal.
She was shocked after hearing this, because she knew almost nothing about these things, and Ryze wasn't the one who got together with Vayne!
Luanna's situation was similar to Varus's; she wasn't greatly affected. During the Vastaya Wars, she was initially a neutral Ascended.
Later, her base was destroyed in the crossfire of some Vastaya battles, so she joined the fray until she was finally sealed away.
Over the long years, Luanna gradually made her way to Freljord. During this time, many people took advantage of her, but they were all eventually corrupted and killed, until Vayne appeared.
After I rescued Vayne, she fled to the North with many refugees. They endured many hardships along the way, and when they finally found a relatively safe place, she was kidnapped by human traffickers.
Many beautiful noble girls like her were trafficked during the war; Vayne was sold to a nomadic tribe in Freljord.
That tribe was very backward, and women had a very low status; they were basically just reproductive tools, like the people Caroline had encountered before.
After many days of hardship, Vayne gradually came to her senses. She realized that dwelling on sad things was pointless, and that she had to escape the tribe!
But that tribe is very remote, and even if she escapes, she will freeze or starve to death. She needs someone to guide her and a means of transportation!
Fortunately, Vayne had studied martial arts for a few years when she was young, and her Teacher was a Freljord. So she also learned some of the local dialect and customs, which successfully caught the attention of the chieftain.
The clan chief was very fond of this brave and straightforward girl, and made an exception by adopting her as his daughter, planning to marry her to his son when she was a little older.
Vayne readily agreed; avoiding any humiliation was already the best outcome, and she certainly didn't want to anger the clan leader right now.
Over the next period of time, Vayne saw many girls who had been trafficked here. They were either killed or kept as pets, and their lives were miserable. This strengthened her determination to escape!
After learning to navigate, she escaped on a stormy night, taking with her the tribe's treasure: the Sacred Silver Crossbow Bolt.
Although Vayne had mastered the skill of orienting herself, she was still a child, and running away in an unfamiliar place was slow.
Her movements were quickly detected, and the entire tribe immediately gave chase, catching up with her in a low-lying area!
The chieftain was furious, cursing her as an ungrateful wolf and vowing that if he caught her again, the entire tribe would "enjoy" her.
Vayne knew perfectly well what would happen if she were captured. Since she couldn't escape, she might as well die here.
Then she discovered that the Sacred Silver Crossbow Bolt she had brought were completely stuck, rendering her unable to use her weapon. Suicide in the freezing cold was far too difficult!
Those around her burst into mocking laughter, for even the strongest man in the tribe couldn't draw the crossbow, let alone a little girl like her.
People slowly gathered around, but Vayne wasn't afraid. Just like when she faced the mage Rebel Army, she glared fiercely at them.
At the same time, she felt intense resentment, having watched helplessly as her family was killed by rebellious mages, with no chance of revenge.
As this thought crossed her mind, a voice suddenly reached her ears. "Do you want revenge?"
Vayne looked around; apart from the mocking barbarians, no one else appeared, but she still responded:
"I'm willing. I'd do anything for revenge!"
"Alright, then give me your body and shout my name, Luanna!"
"Luanna!"
Vayne did as she was told, and suddenly the Sacred Silver Crossbow Bolt grew out of her body. Only then did she realize that it was the bolt that was talking to her!
Then wisps of black smoke emerged, shielding the surrounding blizzard. Before Luanna could speak again, Vayne had already drawn her crossbow and fired.
The barbarians all fell after being hit by arrows, regardless of whether they were shot in vital areas; none survived.
In the end, only the clan chief remained of the thirty-odd pursuers. He trembled as he watched his clansmen die tragically, completely unaware of what had happened.
Vayne aimed for his head, but instead shot into the snow beside him. "You spared my life; today I repay you for the fatherly bond."
Luanna truly felt Vayne's determination; this conviction was the most powerful force, unlike anyone she had encountered before. She was certain Vayne could be put to good use!
Vastaya and their hosts can easily clash over the ownership of a body. If this can be resolved well, they are usually very powerful, and this pair is one such example.
Unlike Bai Juen and Rhaast, Luanna never intended to seize Vayne from the beginning. After stating her conditions, she went into a deep sleep, and those conditions were:
Slay the Vastaya.
They were both avengers; one had her home and people destroyed by the Vastaya, and the other had her family and friends killed by the Rebel Army.
Vayne also took on this task without hesitation. Born into a noble family in Demacia, she was instilled with the ideals of justice from a young age, and was tasked with eradicating darkness and evil. Now was the perfect opportunity!
From then on, she began her long hunt, known as the Night Hunter.