[SSIS-127] Three days without parents who were squid with the unequaled chipo of the elder brother who hates the Tsundere busty sister of the rebellious period. Hasa no Uta

'Uta' and brother-in-law who decided to live together because of their parents' remarriage. During the rebellious period, she was frustrated every time she met without physiologically accepting her brother-in-law's existence, but she masturbated every day in the room, which was also adolescent. No way, this masturbation is the cause .... One day their parents are absent for three days and are alone in two brothers and sisters. My brother-in-law is voyeuring one of her cheeky sisters etch, and urges sexual intercourse with it as a story. Chi ● Po is and humiliated, but the compatibility of the son is too good and it is 72 hours of.