"I love you so much, big brother." During the last summer vacation of her student life, a lively and innocent younger sister sneaks away from her countryside home to visit her beloved older brother who lives alone. Standing at just 148 cm tall, she expresses her love using her petite body, wearing her school uniform, swimsuit, pajamas, and her brother's sleepwear, calling out "big brother" like it's second nature. The university student brother can't take her carefree panty shots anymore, leading to a secret, steamy incestuous affair！！A summer record dedicated to all siscons！
