You know I'm waiting for the cliche chapter of magical girls coming and aiming for shamiko's life because she easy pickings. Due to the magical girls being so weak that they can't even take down the boss of the cafe. (I have no idea if there is such a chapter, but I really want it to happen.)
I didn't notice until Today, but when I was reading raw chapters I thought the art style looked familiar. Then I found out the Artist is the same one that does "Needless"
Her sense of reality became warped. When her mother said they can replace the puppy. Which in turn made her thought if she had died then her parents would just replace her as well.
My Rubik's Cube Solving method: Look one way then the other. Then take a knife and prop it apart. Afterwards reassemble it in the proper order. Yes, I basically cheated.
@shusi95 You do realize he's been possessed by a lot of ghost. So I wouldn't doubt that there was at least one that taught him how to keep it under control at least.