Volume 1 :From Zero = L,u,s,t

Volume 2 :Sinking Deeper = G,r,e,e,d

Volume 3 :To Be Stronger = E,n,v,y,

Volume 4 :The Beguiled City = G,l,u,t,t,o,n,y

Volume 5 :Fighting Evil With Evil = S,l,o,t,h

Volume 6 :Layers