To create a mood, I splurged and invited my girlfriend on a hot spring trip. She brought her sister along to make sex difficult, and I thought it was all over. But then, my girlfriend's sister, Rei, turned out to be a hidden pervert. Despite her innocent appearance, as soon as we arrived at the inn, she started seducing me: 'Doesn't touching with hands count as cheating? Who knows?' Driven by guilt but unable to resist, I succumbed to her little devil's temptation. Throughout our three-night stay, I was continuously jerked off, utterly ruined by her adorable face, whispered dirty talk, and technique.
