Izanami becomes bored with her usual sitting around the house, shut-in, lifestyle. And so, her friends Eione, Florine, and Lauressa decide to show her a magical stone from their homeland, with the power to turn her thoughts into reality. Izanami then begins to bring life to her own Danmaku! (Also known as a Bullet Hell) She then leaves ships behind for the three sisters to chase after her, with a note, declaring her desire to take over the moon!