"I love you, big brother." A lively and innocent little sister came to visit her beloved big brother who lives alone from the countryside during the last summer vacation of her student life, taking time out of her busy schedule of club activities and summer classes. Using her petite 148cm body to express her love, she calls out "big brother" as if it were something she breathes while wearing her uniform, school swimsuit, loungewear, and her brother's pajamas. Her angelic little sister's defenseless panty shots are unbearable, and the college student brother and his big brother have a secret incestuous affair! A video record of one summer dedicated to all siscon lovers!