Close your eyes the end is near,
We're the same you made that clear,
Fade to black it's all that's left,
Your soul corrodes I'm inside.
She was hearing the voice again. It was stronger this time, more controlling. This time, there were dreams to go along with it. She recalled one. The first one she had had in months. She woke up in a space of endless black. She looked around, not really knowing what to think. She heard a voice which sounded like it came from behind her. No... that wasn't right. It was all around her.
"Hi again." She whirled around to see the figure that had plagued her life for four months. She'd nicknamed the figure 'Chara', out of an old videogame she loved.
"Get out of my head, Chara, you can't hurt me anymore!" she yelled, stumbling backwards onto the hard floor.
"On the contrary, I can do more than just merely hurt you now," Chara said, a sinister smile round her eyes.
She'd woken up in a cold sweat. That was when the blackouts started. First, they were just seconds long. Then it started turning into minutes, hours, it had almost reached the length of a day. She had long since figured out what was going on. The dreams were informing her well enough on what happened during those blackouts. The thing was, these blackouts were changing her. She was becoming more like Chara. Chara was successfully making her into a bad person, and it wasn't long before she made her turn violent.
This was what made Frisk start on the Genocide run. It had not been of Chara's accord, or control. Frisk, changed by Chara's influence, chose to start it on her own.
The first part are song lyrics, belonging to Tryhardninja. Undertale and all characters are owned by Toby Fox.