"Your taste back then...it was delicious..."Airi, who ended up living with her fiance, finds out that the man who raped her long ago is her fiance's brother. After being drugged and raped, Airi moves away as if to escape, but she can't stop trembling in fear at the unexpected reunion. Her scum brother-in-law approaches the distraught Airi. "What a fateful reunion. I never thought my sex pet would become my step-sister." I can't escape from my scum brother-in-law, who can only find meaning in life by continuing to rape me...