Important Note: I forgot to tell you this in the first chapter. This story, Sweet Melody, which is the sequel to Purgatory's Hymn, is a mystery. Not just any mystery, because here you will discover things on your own as you read. You will read things that would brew questions in your minds, and you would make up theories to satisfy the questions you might have. And then, as you read along, things will be slowly unravelled to you and your theories will be confirmed whether you are right or not. However, there will be things that would remain as what they are now for your imagination.
For example, in the first chapter showed Sasuke as a father to Naruto, who wanted to dye his hair black. It rose the question: "are they related by blood?" which was later revealed that Naruto is adopted by Sasuke. Also, the feelings Sasuke has towards Naruto is also questionable. Why does Sasuke feels compelled to Naruto? You might think they have something in the past which will be confirmed in Purgatory's Hymn and later in this story.
Also, Sasuke was shown to not wear any eyewear until later. Why did he not wear his shades in the beginning? And then when the past is showed Sasuke seems to always wear his shades. Why? Is he sensitive to light? Or is he a vampire?
In the third chapter, Sasuke is drinking from one of three mugs the maid had brought him. I won't reveal what the drink is in the story ever, but I want you to know that the drink is blood from blood bank of Red Cross. Lol. So, you now confirmed it that Sasuke's a vampire.
The black rose incident is a red point. I know most of you, if not all, wondered why Sasuke is upset of it. It has something to do between him and Naruto, so read Purgatory's Hymn (it has one chapter as of now).
There are more things like these to come and I will leave you to theorize and later confirm it with this story.
I hope you enjoy playing as detectives. :)