BF-599 A record of my overly developed older sister seducing me in the nude and defenselessly, so I had sex with her. - Waka Misono

My home for the first time in three years. - As usual, my sister was completely naked at home. - The only thing that was different from before was that my sister's body had grown to the point where it was difficult to see where to look. - Even as a younger brother, I can't help but be aware of my sister's body. - I was at the limit of my patience with my sister's body, which seduced me defenselessly every day...