- All-Star Cast:
- The drama adaptation's main cast is noteworthy full of people that are j-drama celebrities nowadays such as Mirei Kiritani as Nino, Shun Oguri as the Village Chief, Takayuki Yamada as Hoshi, and Yu Shirota as Sister.
- The main cast of the anime gathers together big names of the voice acting industry such as Maaya Sakamoto (Nino), Hiroshi Kamiya (Kou), Tomokazu Sugita (Hoshi), Takehito Koyasu (Sister), Miyuki Sawashiro (Maria), and Keiji Fujiwara (the Village Chief).
- Name's the Same: Hikaru Nakamura, the manga author, shares her name with one of the top-rated chess grandmasters in the world.
- Real-Life Relative: Kou's voice actor, Hiroshi Kamiya, is married in real-life to the manga's creator, Hikaru Nakamura.
- Relationship Voice Actor:
- Tetsuro, Maria, Sister and Shimazaki are Rachel Benning, Claire Forrest, Hervé Girardot, and Lula.
- Maria and Shimazaki are Shinku and Suigintou.
- Maria, Stella, and Tetsuro are Khi, Izumi Neneko, and Natsuki Ikuhara.
- Tetsuro, Maria, the Mayor, and Tetsuo are Milfeulle, Mint, Volcott, and Cocomo.
- Kou, Jacqueline, Tetsuro, Maria, Stella, Amazoness, Hoshi, and Sister are Nozomu Itoshiki, Abiru Kobushi, Nami Hito, Taro Maria Sekiutsu, Meru Otonashi (in one episode), Kaere/Kaede Kimura, Aoyama, and Kei Itoshiki.
- Jacqueline, Tetsuro, P-ko and Maria are Hiro, Sae, Nozuna and the Landlady.
- Amazoness, Tetsuro, Maria, and Hoshi are Mariya Shidou, Sachi Momoi, the Dorm Leader, and Touichirou Kanae.
- Stella, Maria, Kou, Tetsuro, and Hoshi are Rebecca "Becky" Miyamoto, Akane Serizawa, Tsurugi Inugami, Akira Miyata, and the Alien Subordinate.
- Hoshi, Shimazaki, and Potachi are Hideki, Chii, and Hiromu.
- Tetsuo, P-ko, and Hoshi are Hajime Yasaka, Jun Kamigamo, and Takeshi Yamashiro.
- Hoshi and Potachi are Kagami Mikage and Alexander O. Howell, and together with Nino, they are Yūichi Aizawa, Jun Kitagawa, and Mishio Amano.
- Hoshi, Billy, Amazoness, Sister, and the Mayor are Gintoki, Hasegawa, Sacchan, Takasugi and Hattori.
- P-ko, Stella, Nino, and Sister are Maka Albarn, Kim Diehl, Crona, and Excalibur.
- Kou, Stella, Maria, and Nino are Koyomi, Hitagi, Suruga, and Shinobu.
- Tetsuro and Maria are also Yuno and Shinkuro.
- Talking to Himself: Yuuichi Nakamura voices the three Tengu brothers, so, literally he is talking to himself. He also plays the role of the Last Samurai, and one of Billy's yakuza lackeys.
- What Could Have Been: Takai and Shimazaki were a woman and a man, respectively in their initial designs.
Trivia / Arakawa Under the Bridge