Sex with boyfriend

The girl's parents had gone out for some work, there were only two sisters at home, then the elder sister also went out for some work, seeing the opportunity, the younger sister called her boyfriend, but after the arrival of the boyfriend, the elder sister also came and caught the younger sister red-handed, when the younger sister said that do not tell this to the mother and father, the elder sister put a condition on this That she would also have sex with her boyfriend, the younger sister had no other option but to accept the condition, due to which she accepted the condition of the elder sister