Re: [121214] [unicorn-a/げーせん18] 戦極姫4 ~争覇百計、花守る誓い~ 豪華限定版 + Sofmap Tokuten + Manual [Serial is included] [H-Game]
That is the correct serial. All you need is the NoDVD patch, but it hasn't been released yet.
Just wait for the NoDVD patch and everything will be just fine.