Inspired by Seven Days by TACHIBANA Venio. (In other words, this is also a Seven Days fic.)
This idea has been floating around at the back of my head for quite a while now; I really loved the manga Seven Days and I thought it would be really cool to rework it for a different context as I've rewritten several fairy tales before but never a manga. I know that this idea has been used several times - just a quick search on AFF for instance turns up at least seven different stories from different k-pop group fandoms with varying levels of connection to the manga - but I don't think that's any reason not to try my hand at my own interpretation. If anything, it'll just be an enjoyable writing exercise. In addition, there were a couple of things I was curious about in Seven Days, so now I have the opportunity to go into more detail in that story as well.

Thanks so much to yewookyu at simplygraphics for the gorgeous poster.