I discovered my drunken older sister passed out on the emergency stairs. I called out to her, but she wouldn't wake up at all. With no choice, I carried her back to my place, and unable to resist her voluptuous body, I touched her and smelled her. Before I knew it, I had penetrated her while she was half-asleep and came inside her. A short while later, I visited my senior coworker's house—and there she was, that same drunken older sister. Unaware of what had happened, my senior invited me in, and the three of us ended up drinking together...