Kamen Rider Fourze (Core Switch appears)

With the near finale of Kamen Rider Fourze there's some new images regarding the Core Switch,showing Kengo handling the Core Switch ,while he celebrating his Birthday.The last Horrorscope would be Pieces Zodiart which is Ran Kuroki.

Principal Hayami reveals to the Kamen Rider Club about the truth of the existense of Zodiarts when the next episode Sagittarius acquired all 12 switches ,what would happen in the final battle?