Invited Yuki, who works at a shop, to a hotel. She insists, "It's fine because I'm wearing panties," but in reality, she has quite large breasts, and her gaze gradually becomes dazed with pleasure. She hesitates, saying, "I don't know when I got in the mood like this. Is this bad?" but eventually decides, "No, it's not bad," and grows increasingly curious. While saying, "It won't go in, right? It's hitting something amazing. It feels so good. This half-hearted thing is frustrating," she ends up letting it in herself. Then, although flustered, saying, "This is no good... Ah, it went in. What should I do?" Yuki's hips move with increasing intensity, unable to withstand the growing heat.