This is an absolutely wonderful story, the first fanfic that's made me break down in tears. Lady Charity has a wonderful way of weaving in such emotion and incorporating such amazing themes on life and death and love and living it out to the fullest. It's absolutely heartbreaking but in the end there's a wonderful sense of acceptance and healing and being all the better of a person for it. The way the Bad Touch Trio, Gilbert/Eliza, and Gilbert's and Ludwig's relationship are written is definitely amazing and you really get a sense of how close they all are.
The whole story emphasizes that it's not the prospect of the end that should define your life and keep you down, it's the journey there that counts. Even though the ending is pretty expected it still hits you hard and you find you've still been crossing your fingers all along it wouldn't happen like this. Then you realize, alongside the characters themselves, it's the time shared and spent along the way that counts the most.
As an extra treat watch out for the songs and stories that she recommends. They're everywhere - her influences, quoted in the beginning or end of chapters, mentioned within the stories themselves. It's fascinating to go through them and see how they influenced the story.