Satsuki Kakeru lost his sister by suicide and has been living a dull life ever since then. One day, he is transported into a bizarre world "Red Night" along with his friend Minase Yuka. In order to survive and escape from Red Night, he fights against Dark Spirits (Ralva) and Black Nights.

• Daisuke Ono
• Ayano Niina
• Chiaki Takahashi
• Mai Gotou
• Emiko Hagiwara
• Noriko Rikimaru
• Yuu Asakawa
• Yokote Kumiko