The sight of the older sister sleeping in a casual tank top, something you don't usually see, stirs up lustful impulses. Her ripe body makes you forget the atmosphere of a hospital room and the fact that you're visiting her. You're injured and can't move, and because you're in the hospital, you can't even make a sound. There's no need for unnecessary words in a sexual act that violates morals. Her urgent, rough breathing echoes through the hospital room.