Sojiro continues his journey in a new world of swords and sorcery, armed with a legendary blade that can take the form of a beautiful woman. As a couple, he and Hotarumaru have already consummated their bond, and as sword and wielder, they've rescued a carriage from a ruthless band of thieves. Grateful to her brave rescuer, the acolyte Sistina proposes a binding magical contract which would see her completely submit to Sojiro's will. Yet is this oath truly as absolute as it sounds?