User blog comment:B214/Question and Answers 6/@comment-86.149.63.148-20180909111645/@comment-3965848-20180910075111

Delusion Magazine ☆ Night Material Collection, was only bundled with season 2 and after scrolling through the only they translated, I think it's all set some time after Volume 4.

I think the reason why no one answered is because no one knows yet, may have to wait for the rest to be translated and read through them to pin point the details where they're chronologically set in the story.