My brother and sister are always fighting, and my parents are amazed. - But actually, this brother and sister Genka are all acting to deceive their parents. - In reality, the relationship between the two crosses the border between brother and sister and is a lover. - That's why I flirt with a little gap that my parents haven't seen, and when my parents go out, I have sex all the time! - The sense of immorality that parents should never get caught up in is even more sensitive to each other and addicted to forbidden romance! More..