I found it pointless, Luffy didn't need to kill, instead of simply saying that by killing he will awaken haki, you could have given him a purpose. it would be much more interesting
Ch 17 Chapter 17 If You Want Your Heads, You Must Have Them!
man, showing the status of the fighters doesn't even make sense at this point, it would be more interesting if you simply put a total power in numbers, like dragonball
you got me addicted to this work, and now you don't want to take responsibility, beware author, if you stop posting chapters I'll track your ip and show up at your house to charge you