One day, "Nanao", who is his father's secretary, came to Shota's house.She will take care of Shota while her father is away on business.The start of a strange life together with Nanao, who is a little strict because of her job as a secretary, and Shota Masegaki, who has been curious about women's breasts since he was young and has no mother!Usually, a serious and beautiful secretary thinks that the other party is this ○, and while she's off guard, she gets caught up in Shota's pace, gets her big boobs rubbed, gets tampered with, and finally has vaginal cum shot sex... escalates. Busty secretary rushes into serious mode for naughty mischief!