Rin was imprisoned for committing a crime out of revenge for losing a loved one. After completing her sentence, she returned to the Inugami family, the chivalrous family who once adopted her and raised her. She learns that the group is in a touch-and-go situation until the conflict that stems from the incident in which she was involved. With her kindness to Ryuji and Azusa, who welcomed her warmly, and the warmth of her love, which she never forgot, Rin's wicked desires strayed from her righteousness. A blow of justice explodes!