Time For Another Weird and Impossible Dream

I was at work, and it was raining inside, but only in certain places, like the bathrooms. The rain would move around to different bathrooms, but it would always start just outside the entrance and continue inside. I'm not sure if I was at work or home, but the building was filled with a strange gas that was putting people to sleep. We only had a few respirators to keep out the gas, so people had to share. Everytime I was beginning to feel sleepy, I would have to ask Jimmy or someone else for one. At one point, I went into the bedroom that had once been mine, but when I moved out, someone else had moved in. I looked around at the room to find that the person living there had made the window bigger. Weirdly enough, it turned out that the person who was living there was Gilgamesh from the Fate series, but for some reason he liked me. He gave me a bottle of prescription strength painkillers for some reason. I must have had a headache or something. We talked for a little while, and I started feeling sleepy, so I left to find Jimmy.
Later, I was walking around the neighborhood and was approached by two people who looked sort of weird and deformed, and they kept asking me what I had and tried to persuade me to sell the pills to them. I told them they could have one pill for five dollars, and they told me my prices were ridiculous. I asked them why and what they would charge, maybe a dollar? And they told me 50 cents. They persuaded me after several times to sell them some, and I was hoping they would go away, but they didn't. I briefly debated my options. Who would be able to get here faster, Emiya or Gilgamesh? For some reason, I chose to call for Gilgamesh, who was apparently at the hospital for some reason at the time, and after a bit more pestering, Gil showed up. He took care of the problem, and we walked off together, talking. He told me the people who had been bothering me were mixed with dogs because of some kind of experiment or something, and they were learning how to exist in society by watching others and copying what they see. Since this was a bit of a bad area, they were only copying what they saw. He also told me he was going to adopt me as his sister.