Sailor Rion solely fights with monsters who attack humans. Monster Sisters from hell come to defeat Sailor Rion. A college woman Aki Uozumi encounters the site where Sailor Rion has her energy absorbed by Monster Sisters that returns her to human appearance Jun Shido. Jun still has to fight the Monsters Sisters and Aki gets the power to transform into Sailor Paisis to come to her aid.

The Kisaragi clan has been fighting against the demons known as the Seven Demons for 1000 years. Raika, who inherits her family’s power, puts on a demon defeat suit that causes extreme pain when worn, and throws herself into the battle to defeat the seven demons! Raika accepts as her destiny， even the intense pain caused by having her soul taken into her body to prevent the resurrection of the seven demons she has defeated.