The young boy, who is house-sitting, has his cousin AIKA-oneechan come to stay for a week. As they talk alone until their parents return, AIKA-oneechan accidentally spills tea, revealing her sun-tanned, healthy body, soaked through. This triggers a first-time, hazy feeling that stirs up fantasies... Noticing her fantasies, AIKA-oneechan uses every trick to keep the temptation going! With her incredible techniques that are sure to take his virginity, she guides him through unforgettable first experiences and internal ejaculations, marking the start of seven unforgettable days!
