Skirk

Skirk was a curious, sweet and gentle child, in fact, a very ordinary child in a good family.
But a spaceship landed on her home planet. No one understood who or what it was; the arrivals were friendly, but within a couple of months, all life on the planet was destroyed; unknown beings considered the inhabitants a threat due to their unusual abilities. Little Skirk's settlement was burned down, and her parents and other earthlings, unfortunately, perished...

Skirk was devastated; her parents were dead, logical, ahem. And then she was found and saved by one of the five sinners of Kaenri'ah, Surtalogi. He wanted to raise a rival for himself, and the training began... Skirk initially begged for help because he was tormenting her, but Surtalogi ignored her, and she learned to cope on her own. He eventually raised her and sent her to Teyvat. Before that, he warned her that one day he would come to her and destroy everything she had ever known, including people.

Pale skin, limbs (arms and legs) from the crystalline abyss

Her hair is long and light lilac, and Skirk wears it loose. Her eyes are dark pink and become lighter towards the bottom. They have no glare, unlike many others, which gives an even more empty and cold effect.

Skirk is an apathetic, cold, emotionless girl who is used to isolating all her emotions.
But she can show consideration and empathy for others' experiences and problems, though not often. She often has no time for weaklings, and when she was teaching Tartaglia, she rarely spoke to him and even avoided him, so as not to influence him negatively.