What would you do if money could be exchanged for life? Sell ten years of life for a fortune, or give up everything to buy one more year. At the age of 17, a high school boy who has it all together meets a man with superpowers that are both godly and demonic. Through a deadly struggle for his life, he stumbles upon a world "on the other side"! Take a cold look at the fixation on human life in this sharply illustrated dark fantasy!

http://mangayou.com/mangafox/aku-no-higan-beyond-evil

I really love love love this manga. It's perfect for me. Love the main conflict and focus of it. I love the (main and some side) characters. Everything. Honestly, the first sentence of the summary got me, and I still refuse to read the rest of the summary even while posting this. Maybe I'm over-hyping - actually, I'm sure I am, but I was excited for this, so I'm projecting. That is all I have to say.