Mako couldn't come visit and the weather was too cold for the house parents to let us out, so it was just Nui, Iori, and I and we were sitting in my room. We decided to take a peek at that bundle of envelopes we found in Sis' room. Like I said before, they had Dad's name but then they started to get the name "Satsuki Kiryuuin". I told 'em I didn't know who that was and Iori said, "Maybe that's your sister's real name."
"Huh?"
"Well, you said you didn't really know her name and you knew her better as 'Sis', so 'Satsuki' could be her real name, odds are, especially if she was your guardian. Certainly, she couldn't have put 'Sis' on any papers of any sort."
"Then how come I wouldn't know what her real name is?"
"Probably because she introduced and addressed herself as 'Sis' and so you know her only as such."
He went on to point out who the letters seemed to be coming from might be my mom. Nui and I looked at each other and he answered our questions with, "Well, the person who sent these have the same last name you, your sister, and your dad do and the fact that your sister said your mom left."
We talked a little bit about the letters until I said, "I don't remember what Mom looked like." Nui pulled out that book and said, "This is a photo awbuwm or so I think it is. Maybe we should open it up." We opened the book and found out that it was that thing that Nui said it was. There were pictures and the first picture we saw was when my parents got married.
Iori pointed at the lady in the picture and said, "That must be your mom and she does look like you." and then Nui pointed at the streak in her hair saying, " See? You have stweaks in your hair just like this lady." We would turn the page and saw another picture of Mom and Dad holding a baby. We didn't really need to guess who the baby was because it was obvious that the baby was Sis, however, they weren't at home, actually, they looked like they were in some kind of room.
The room was weird but it had other babies in it and those babies were in boxes and had tubes and things, just like she was. "Mom" and Dad looked worried and sad but they still smiled. I couldn't make sense of why they could be worried and sad and still be happy. I asked Iori as to why that was, to which he said, "Maybe your parents are smiling because they were happy to have her but they were upset because they probably thought they might not have had her very long."
"Why?"
"From what it looks like, she might have come into the world early because, usually, when babies are in those things, called 'incubators', they came early or she was probably born sick."
The picture after that was with Mom holding Sis and feeding her with a bottle. She wasn't in that thing Iori said was an incubator but she still had tubes in her. A lot pictures with Sis as a baby had her in the hospital and such until later. We looked through the pictures and found that Sis really was a weird kid, who lived inside the house. Then again, she's also in bed for some of those pics.
She got older and there was a picture with Mom, Dad, and her sitting together, except Mom's stomach was looking huge. The pic after that was a picture of me and Mom. I was a baby in that picture and I think we were in a hospital. I wasn't in a box like Sis was, so I guess I was fine. Mom seemed happy but tired and the pic after had the three of us, Mom, Sis, and me.
Sis, however, had a tube in her arm, and had tubes in her nose, along with being in her pajamas and having them circles under her eyes. She didn't look "right" but with Mom and me, she looked a better, when she was with us. There were plenty of pictures with the four of us, then three, and then just us two. She seemed to be getting better and better, at least just a little bit, but she looked like she could break.
After looking at a lot of the pictures, Iori said, "Huh, these pictures seem to explain a lot of things." and Nui was agreeing with him. Nui pointed out that a lot of the pictures either had Sis in the house or in the hospital and Iori went on to say, "I think the reason your sister is agoraphobic is because she knows little else and, being sick all the time, basically didn't give her much to work with. Likewise, your sister was probably hurt deeply when your parents split and then your dad dying and it sent her over the edge."
I asked him as to what the hell that had to do with anything, to which he, with Nui nodding her head, said, "I guess what I'm trying to say is that her life hasn't been ideal and she loved you more than anything, so she decided to take care of you in accordance to what she was used to."