Free to download over at Amazon is the Kindle edition of Charlotte's Feathers by Matthew Fish (click here to download from the UK). Why not check it out before it goes back to full price?
A young man named Benjamin Strong has just lost everything after the death of his parents and girlfriend. After a failed suicide attempt, Benjamin wakes up to find an angelic version of his girlfriend, Charlotte, sitting by the edge of his bed. She tells him that he has seven days left to live- and that he has a very important decision to make: Die alone, or take all of humanity with him.