At a relative's wedding at Kanda Myojin recently, I found Heiji-ozuma's monument. If you're of a certain age, you know him as hero of Nomura Kodo's (1882–1963) "Zenigata Heiji Torimonocho."
The courtyard has photo lower left style face-in-hole boards for tourists (also called "face boards"), but the monument sits to the right—or rather behind—the main hall. Hard to find; it overlooks Soto-Kanda. An imposing ~2m natural stone bears the four characters "Zenigata Heiji." The base uses Kanei tsuho coins from his coin-throwing trick; beside it, a ~50cm stone marks henchman "Garachohachi" (Hachigoro)—a witty touch.
Heiji is fictional, but set in a row house in Daikucho below Kanda Myojin with sweetheart Osei—so in 1970 (Showa 45), after Kodo's death, writers of the Japan Writers Club (Kodo was chairman), publishers, and film/TV people erected it here overlooking Myojinshita. A side monument lists founders =photo upper right= with a star-studded roster: Bungeishunju's Ikeshima Shinpei, Chuo Koron's Shimonaka Horo, Kodansha's Noma Shouichi; film's Daiei Nagata Masaichi, Toei Okawa Hiroshi; writers Yamagoka Souhachi, Yamate Juichiro; Heiji actors Hasegawa Kazuo (film), Okawa Hashizo (TV). I was more impressed by the names than the monument itself.
His coin-throwing came from Kodo's inspiration—Water Margin's stone-thrower Zhang Qing—and seeing "coin" on a construction site sign; the Senkata-gumi signboard gave "Zenigata."
Drop by when visiting Kanda Myojin? From Takebashi, Marunouchi Line Ochanomizu, Chiyoda Line Shin-Ochanomizu, or Ginza Line Suehirocho—all ~10 min by subway, then ~5 min walk each.