The Representative Phone-Medium Urban Legend. Mary-san's Phone Call is regarded as the ultimate realization of post-war Japanese urban legends, perfectly embodying the three characteristics of "object possession," "phone medium," and "distance compression." Alongside Hanako-san of the Toilet (debuted 1948, fixed-location type) and Hachishaku-sama (Eight-Feet Tall) (originated online 2008, humanoid pursuit type), it stands as one of the three major pillars of post-war urban folklore. Notably, by using the telephone—the newest communication medium of its time—as the conduit for the supernatural, it marks a stark departure from pre-war oral traditions or shrine-based ghost stories, instead presupposing a modern industrial society and mass-produced toy culture.

The Foreign Doll as a Cultural "Other". The specific designation of the Mary doll as "foreign-made" is a crucial folkloric detail. During Japan's post-war period of rapid economic growth, mass-produced foreign dolls (like Barbie and Blythe, the precursors to Licca-chan) entered Japanese households via the occupying forces, acquiring a dual nature of aspiration and eeriness in girls' culture. The narrative structure of "a discarded foreign doll seeking revenge" in Mary-san's Phone Call aligns seamlessly with Hiroshi Matsuyama's interpretation that the legend crystallizes post-war Japan's complex emotional distance and tension toward foreign toys and the artifacts of victorious nations^[1]. The cultural friction is also evident in how the Licca-chan doll was marketed by heavily emphasizing its "Japanese-ness."

The Historicity of the "Telephone" Medium. The late 1970s marked an era when landline telephone penetration in regular households reached 90%, making it commonplace for children to answer the phone at home. Concurrently, services like the Licca-chan Phone (1968-) and various telephone services (time, weather, fortunes) fostered children's imagination that a distinct personality might exist on the other end of the line. The core eeriness of Mary-san's Phone Call—the sensation that "someone is peeking into my house from the other end of the phone"—is inherently tied to the landline culture of that era. In the age of mobile phones and smartphones, where the connection between a phone number and a physical location is diluted, similar ghost stories have evolved into mobile ringtone or voicemail variants like *One Missed Call*.

The Vocal Training Function of Repetitive Phrasing. Mary-san's Phone Call also serves as a classic example of an oral ghost story memorized and passed down by children. The repetitive phrase "I am Mary-san, I am currently at [Location]" is easy to memorize and possesses an open-ended structure where the story works simply by swapping out the location. In storytelling settings like school lunch breaks, field trips, sleepovers, and tests of courage, narrators infinitely spawn local variations by inserting their own neighborhood or specific landmarks. This is a prime example of the "recursive oral generation" structure of urban legends pointed out in *Toshi no Ana*^[2].

Re-systematization in the 1990s "School Ghost Stories" Boom. During the 1990s, amidst the "School Ghost Stories" boom sparked by Toru Tsunemitsu's *Gakkou no Kaidan* (1990) and fueled by children's books and TV shows, Mary-san's Phone Call became a standard repertoire piece. It frequently appeared in Toho's 1995 *School Ghost Stories* film series and various ghost story variety shows. Through this process, what was originally an oral tradition originating in the Kanto region was consolidated into a nationwide urban legend. Alongside contemporaries like "Kashima Reiko," "Teketeke," and "Aka Manto" (Red Cape), it forms a core component of post-war school ghost stories.

The Dramatic Structure of "Right Behind You". The story's final phrase, "I am Mary-san, I am right behind you," serves as a classic example of dramatic reversal (peripeteia) in urban legends and has been the subject of both literary criticism and folklore studies. Because the physical act of holding a phone receiver to one's ear implies that "the field of vision is diverted from behind," the moment the voice on the phone finishes speaking, the physical action of turning around is inherently delayed. Incorporating this physical time lag into the horror structure is the unique genius of Mary-san's Phone Call. The 2011 film adaptation similarly anchors its narrative around this climactic final line.