Great story so far (I've read the first 19 chapters), but something caught my attention in the last chapter with the move, and I came back here to check. And in the very first paragraph I found the same contradiction, which slipped my attention when I first read this.
You say (here and in ch 19) that he has had the same room for almost 18 years, but at the same time you say here that they moved to the house after his mother started working in the store (9 years earlier), plus he has memories of their earlier house and the surroundings and had friends where he lived before.
I know it's a minor thing, but it still annoys me when the rest of the story is so very realistic and captivating. Can't wait to read more and hope it ends well.