The manga series "Why are all the Users of this Public Bath Beauties in the Bud?" centers around a young man named Haruto, who stumbles upon a peculiar public bathhouse while searching for part-time work. The bathhouse, named "Yuragi-sou," is exclusively frequented by strikingly beautiful women, each with their own unique personalities and quirks. Haruto soon discovers that the bathhouse is not an ordinary establishment; it is a place where supernatural phenomena occur, and the women who visit are not entirely human. Many of them possess mystical abilities or are connected to otherworldly realms, adding an element of fantasy to the otherwise slice-of-life setting.

As Haruto begins working at the bathhouse, he becomes entangled in the lives of its patrons and staff. Among the key characters is Ayame, the bathhouse's manager, who is both alluring and enigmatic, often guiding Haruto through the strange occurrences. Another prominent figure is Yuzu, a cheerful and energetic girl who harbors a secret tied to the supernatural. There is also Rin, a reserved and stoic individual whose past is shrouded in mystery, and Saki, a mischievous yet kind-hearted woman with a playful demeanor. Each character's backstory and connection to the bathhouse are gradually revealed, intertwining their fates with Haruto's.

The narrative explores themes of coexistence between humans and supernatural beings, as well as the bonds formed through shared experiences. The bathhouse serves as a neutral ground where these interactions unfold, blending moments of humor, drama, and lightheartedness. Haruto's role as an outsider allows him to bridge the gap between the human and supernatural worlds, often mediating conflicts or uncovering hidden truths about the bathhouse and its patrons. The series balances episodic storytelling with an overarching plot, gradually building a sense of intrigue and camaraderie among the characters.