DVAJ-685 - I continued to administer a small dose of aphrodisiac to my step-sister daily, and as time passed, unable to resist her increasingly heated and unconsciously swaying hips, I immediately engaged with her. Despite repeated climaxes, she continued to desire more, and I repeatedly penetrated her until she was thoroughly aroused and saturated. By Kuin Sunao.

Unexpectedly obtaining an aphrodisiac, I decided to test its effects on my cohabitating step-sister. Secretly administering a small dose daily, her condition gradually began to change. Her body became heated, sweating as she swayed her hips, and she let out sweet moans with even the slightest touch. After a week, my thoroughly lascivious step-sister began to masturbate, unable to resist, and I intruded, showing her my erect penis, causing her to lose reason and suck on it. I squeezed her large breasts and thrust into her soaked vagina, and she repeatedly climaxed with an ecstatic expression. Still not finished, until I reduced the complaining step-sister to a mere physical vessel…