A small goddess flew through the place known as celestia. "I wonder if big sister is busy again?" She said mostly to herself as she smiled. She (kinda) got along with her sister but also with other gods. She was known as the 'goddess of life' all around celestia and teyvat due her kindness to others and heavenly personality which was the very opposite of her sister who was certainly busy at the moment but she didn't know that.

Oh... btw, the goddess's name was y/n.

She was currently flying to her sister until she heard a sudden explosion. "What the?" She quickly hides behind a pillar and peered over to see two siblings fighting her sister. 'What is this?' She thought in concern once she saw her sister stop the two and begins to crystallize them but one of them flies away but the other is caught in the crystals.

"Lumine!" The other yelled and flies towards y/n's sister making her quietly gasp after her sister stopped his attack and begins to crystallize him as well. "Wait no! Give my sister back!" He shouted before he was a cube.

Having seen enough, y/n flies over to her sister who just stared at the girl with a monotone look. "Um... dear sister," y/n began nervously. "W-Who were those people?"

"Outlanders who have no place here." She simply stated making her younger sister even more nervous even scared. "Come with me y/n. We must get rid of them." Those words caused her sister to pause.

"W-What?"

Her older sister looked back at her. "Was I misheard, sister?" She stared down at her. y/n looked down as sweat dripped down her face. "I believe I can't take part in something like this, sister. It... It feels wrong!" She shouted causing her sister to be shocked before she glared.

"Well, then," her sister raises her hand towards her, confusing y/n. "I guess you will have to be punished for not obeying me." Before y/n could do anything, she suddenly saw red before completely passing out.

"S-Sister..."

A young girl awakens to the sound of birds chirping but she only saw darkness. 'What is this place? Where am I?" She thought she began to move her hands around and ripped something making her confused as she continued to tear at something before she finally saw a light.

She soon sits up to the sun in her eyes with grass and trees surrounding her. "W-What is this place?" She spoke softly as she rubbed her head before standing and falling straight on her face. "Oww..."

"y/n..."

The girl turns her head to a voice. "H-Hello? Who's there?" She said softly. 'Who's y/n? Is that me? It has to be.' She thought while slowly standing up, watching her step each time.

"y/-..."

The voice soon begins to fade making her panic. "Wait! Don't go!" She shouted in fright but falls once again and scraped her knee causing her to wince in pain slightly. She just lays there with tears slowly coming down her face. 'Where am I? Someone please help me.' Without her noticing, a male and a flying child fairy from behind some trees.

"Hello? Are you okay?" The flying fairy asked causing the girl to jump in fright and she backs up into a tree which also scares the flying fairy who flies behind the male. The male looks at the girl in shock before kneeling down in front of her.

"Hey, are you okay? You can trust me, I promise." He spoke towards her softly causing her to clam down a bit which he noticed and smiled. "We'll help you. What's your name?"

"y/n..." She said softly basically muttering but he smiled even more. "y/n, huh? What a pretty name," she blushed lightly. "I'm Aether and this is Paimon."

The fairy know as Paimon flies over to them and waves awkwardly. "Hello! Sorry for startling you." She said and y/n waved her hands. "No, no. I should as well apologize, I scared you too, Paimon." She pats the fairy on the head and Paimon smiled at her as well as Aether.

A/N: I know y/n seems weak in the prologue but it's only the beginning, she'll get stronger along the way.