In a dental clinic located in Tokyo, known as Matsumoto Dental, works a beautiful female doctor named Yuki Matsumoto. She's admired not only for her skill in examining patients' teeth but also for revealing an unexpected side during treatment—deliberately exposing a huge cock as if setting a trap of seduction. "While I'm checking your dental health, how about letting me examine your lower mouth too? ♪" Tempted by these words, you might unexpectedly find yourself in a romantic affair with the female doctor at your local dental clinic.