When I stopped by my relative's house for the first time in a while, I saw that my cousin whom I hadn't seen in several years was cuter than before! - However, the relationship between the sisters is getting worse, and it seems like they have to beat the other at everything, so they fight for this boring me! - The fight between the two, who won't yield to each other, gradually turns into a naughty direction... It develops into a fight for the dick on the top and bottom of the bunk bed! - When both of them were asked to do it at the same time and tortured each other violently, they ended up cumming continuously on the top and bottom of the bunk bed, and they became best friends!