三人は仲の良い高校の同級生。僕の彼女と、元カノのみつき。みつきは結婚していて、僕たちは同棲中。たまにこうして集まって食事を楽しんでいた。しかし今日で全てが変わった。みつきが身体を寄せ、キスをしてきたせいだ。僕たちは彼女が旅行で外出した2泊3日の間に、数えきれないほどSEXをしてしまった。The three of us are close high school classmates. My girlfriend and my ex-girlfriend Mitsuki. Mitsuki is married, and we are living together. We used to get together every once in a while and enjoy meals like this. But today, everything changed. It was because Mitsuki, who was excited, pulled me close and kissed me. We had sex countless times during the three days and two nights she was away on vacation.
