Legend of Sword and Wind: I Can Cut the Thread of Fate

My name is Kane. I can see a line in the living thing. To cut it off is death. This line - someone told me it's called "karma." Everyone has it, except me. I have a master, a comrade, and a lover. There is everything worth protecting. It's just that I haven't figured out two things - Why don't I age? Why does everyone have that line but not me? Until that day, there was a solar eclipse in the sky.