"Aria" decided to attend a vocational school in Tokyo. She has no money and is not good at part-time jobs. She came to Tokyo to stay in her brother's room for a while. Her younger sister is a plain and neat country girl. Her brother decided to do something about her, so that she could make her sister grow up and put on her cute miniskirt and lewd underwear. Her sister who changed clothes is so lewd and erotic that I can't help but do naughty training!
