Sudden power outage! My sister, who is overly busty and afraid of the dark, surprisingly asked me to be alone with her in the narrow bathroom! Even though it's dark due to the power outage, her large breasts keep hitting my arms! Gradually, my eyes are getting used to the darkness and I can see her boobs clearly! They're huge! My sister was even more busty than I expected! However, since I can see her, of course she can clearly see my fully erect dick… As I felt awkward, my sister reached out her hand towards my crotch! Initially confused, I also started squeezing her breasts and couldn't stop…
