One day, my wife, who works hard at her job, came home after being away on a business trip. She seemed stressed out and immediately demanded physical contact to relieve her tension. My sister-in-law, Nao, often visited our house to cheer me up. When I complained about being forced into a 30-day abstinence for the sake of making a baby, she teased me by touching my crotch and said that if I could resist, maybe she would like me too...

ある企業に勤める僕はこの家に1人、暮らしている。稼ぎ頭の妻は出張が多く、休日に帰ってきてはストレスを解消するかの様に身体を求められヘトヘトの生活を過ごしていた。そんな僕を気遣ってか、義理の姉・ナオさんが良く我が家に遊びに来ていた。そしてナオさんに子作りの為、30日間の禁欲を強いられている事を愚痴ったのだが、ナオさんは不適な笑みで僕の股間を触り、我慢出来たら私の事も好きにして良いよと囁いてきて…。