Haimura Moroha has the memories of two past lives. He meets two girls, Ranjou Satsuki and Urushibara Shizuno. Their past and present lives begin to intertwine.
Step Eight Dark Art, Thunderstorm Helix!
Achte dunkle Kunst: Thunderstorm Helix!
¡Arte Oscura Paso Ocho, Thunderstorm Helix!
¡Arte Oscura Paso Ocho, Thunderstorm Helix!
8e niveau des arts des ténèbres,
Thunder Storm Helix !
Ottava Arte Oscura, Thunderstorm Helix!
Passo Oito da Arte da 
Escuridão, Thunderstorm Helix!