You're a bog Zombie book reader, I need some help.

I read a book or a story where IT happened. A couple parts I remember was a guy that lived in an apartment complex was trying to survive and and THINK he found a katana. And there was also a blind "Samurai" that lived in the mountains and carried a weapon that had a half moon blade on one end and an Ulu shaped blade on the other end. Do you know the name of this book? It's been driving me nuts trying to find it again.