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.
Clench those ass muscles, you bastards.
Zeigt gefälligst, was in euch steckt!
Aprieten los músculos de 
sus traseros, bastardos.
Aprieten los músculos de 
sus traseros, bastardos.
Mettete un po' di energia in quei culi, bastardi!
Aguentem firmes, vocês aí!