A dreamy butt paradise for you who loves ass, where a beautiful sister turns her beautiful and unprotected butt to you and lets you stare at her. We don't even know that we are looking at poses that clearly show the shape of the buttocks that suddenly stick out in everyday life... A work that focuses only on the buttocks, where you can always look at your sister's beautiful buttocks from behind. Come on, you are at home, beer in one hand and sake. [* There is no SEX scene in the main story. ]