Hurt me more

My name is Nicolas Adam Garcia, one of the most famous mafiosi in history, known for my insensitivity.
I have sinned a lot in life and I do not regret it at all, I am not a believer nor a man with a second chance.
People call me shadow, I think it's because I tend to prowl around in the shadows or my dark and unpredictable being.
When you're in the dark, you look around instinctively because you feel the need to know what's going on around you, I'm the one thing a man in the shadows fears.
Take this book as my diary, or something, and I'll see you at the last chapter.