[This is a story Satori hates the idea of telling. It is one she has never properly told - she's alluded to it, a few times, but she's never come out and said it plainly. Even her pets had to figure out what happened for themselves.]

...When she was no longer able to handle the weight of being hated, she closed her eye. It was my motive, back when what we were offered was the chance to undo a mistake. By ensuring it couldn't work, she trapped herself in her own subconscious. She doesn't feel anything anymore. She left home, went to the surface, and spends all her time up there, looking for things that interest her. I'm not - I'm not sure the sister I had even exists anymore. I can't read her mind anymore. It's always just...silence.

The mistake I wanted to correct was not listening to her cries for help. I thought she would eventually get over it and come to the same conclusion that I did - if people hated us, it didn't matter what we did, and we could do as we wished. But to her, it mattered very much, and she hurt herself because I didn't offer her the support she needed.

[Because she's a terrible person, and a terrible sister. And every day she wakes up and sees the pendant that represents sloth, and she's reminded of how it feels to sit back and do nothing while the only family you have rips her psyche to pieces.]

So...yes. She's always like this. And it's all my fault.