While their parents were away in the countryside for a few days, the older sister decided to invite her friends over to hang out. The younger brother didn’t seem to care that his sister was bringing friends over, so he continued to sleep, pretending that nothing was happening despite the noise from outside. However, he eventually had to wake up to greet the guests at his sister's request. At that moment, the young man was stunned; all of his sister's friends were female, and they were dressed quite 'revealingly.' The younger brother began to feel uncomfortable in 'that area,' his heart raced, and he was extremely surprised and mixed with happiness when his sister's friends were extremely flirtatious and... lustful.