“…Shall we try doing an erotic stream?” Miki, a high school girl, was told by her brother that she might be able to make money easily by streaming. When she tried out an online live stream showing her cleavage… (Wow…I can get that much money just by showing a little boob…?!) She became obsessed with the allure of tips (chat money) and began to want to make more money. She changed her name to “Miki” and started live streaming sex scenes with her brother as the main character…? The brother and sister’s money-making scheme using erotic streams was about to begin…!!