Trivia: Sangatsu no Lion
- Name's the Same: Shion no Ou also has a character naimed "Nikaido." Coincidentally, it is also a shogi manga. The two characters, though, are far removed from each other.
- Series Hiatus: Upon reaching Chapter 97 in September 2013, the series entered hiatus due to Umino's need for a hospital leave. The hiatus ended with the release of a new chapter in February 2014.
- Similarly Named Works: Sangatsu no Lion is also the name of a 1991 drama film. In the case of the movie, Lion is usually romanized as "raion."