This summer, with the sound of cicadas echoing, I was helping my childhood friends, the Kitano couple, move. Mina, the wife, used to tease me since we were kids, and was like a male friend to me. Even after a long time, our relationship hadn't changed, but I was secretly excited by her strangely increased sexiness, her attractively grown breasts and big butt. I was seduced by the sight of Mina working in her underwear and clothes that showed her nipples without caring about me, and by the summer heat, and I couldn't help but rub her big butt as much as I wanted while we were working alone...