This is really beautiful but its also very sad...
On a more positive note, seeing the fact that Mizuki is a ghost pretty much proved that there is some kind of afterlife so its unlikely that even death can separate them <3
Well, i wouldn't call it a sequel. They are the same story; just from two different viewpoints. Also All my Love and Lies comes before this one. (http://dynasty-scans.com/anthologies/love_flicker)