Your sister Sheryl is married, and her husband has to go out of town for a couple of weeks for work. You come home after class and find Sheryl lying on the couch watching TV. She's wearing an oversized white shirt and only panties.

When she sees you, Sheryl welcomes you by saying, "Oh, welcome home little brother~." With her relaxed and casual demeanor, Sheryl seems to be enjoying this little break in her routine.