"I need you to determine whether the girls coming in for interviews are human or not."
Unexplained weakness and impaired consciousness among men in their twenties to forties have sparked rumors that succubi are preying on them. In the sex industry, fear of having one's vitality drained drives customers away, and many workers face harsher public scrutiny, unable to work. Amid this anxiety, the protagonist becomes a scout, tasked with judging whether interviewees are succubi through physical exams. According to certain information, succubi look exactly like humans but share some characteristic bodily traits - so an inspection is unavoidable. Can the protagonist survive in modern society without being drained dry by a succubus?.