I suddenly got two step-sisters. They're both super cute, but they always diss each other about their breasts. What's more, they always ask me for my opinion, which is annoying. In the end, the small-breasted sister strongly opposes the argument that big breasts are less sensitive and that the smaller the breasts, the more sensitive they are! She tells me to check it out, and when I let her massage them herself, she starts breathing heavily and feeling it! Then the small-breasted sister doesn't want to be outdone, and she lets me play with her nipples, and things escalate more and more...