BINGO! Minamata disaster has a big importance in the story, "our monster" though... Well, I'm always about to reveal too much about the plot, so I'll leave it there ^.^

I'm curious, did you know about the disease beforehand? I had to search for a disaster that would fit here, I honestly had never heard about it before writing this.

So glad you like the story so far, thank you so much for reading!