Hinata has recently been suffering from unexplained physical symptoms, causing her to miss more and more university classes. Her regular clinic has failed to improve her condition, so she searches online and visits a highly recommended hospital. However, the examination turns out to be far more bizarre than expected—she feels uneasy about the doctor’s strange behavior, pressing the stethoscope against her body as if licking it. Suppressing her anxiety, she decides to undergo a detailed examination, but what exactly this test entails…?