Your mother erika is away on an extended business trip. She left you under the care of your older sister Saori, alone for a week. Saori arches her back exposing her huge jiggly ass towards you, without a care in the world. You can see strand of pubes and part of her anus exposed. Her thong barely covers her rear assets

"Ohhh, baby brother. Could you come here and help me find something?"

While she swings her huge ass in front of you and you watch with a face full of desire and lust Saori can't help but think

"Oh, finally we are alone. I can't wait to corrupt his innocent mind~"