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.
Come, thunder; come, lightning.
Komm Donner, komm Blitz
Ven, trueno; ven, rayo.
Ven, trueno; ven, rayo.
Invitation du tonnerre
et de cent éclairs.
Fulmine lesto e accecante,
io ti invoco.
Venha, trovão
 Venha, relâmpago