* EnsembleDarkhorse: Saikawa isn't actually featured that much in the storyline, since the Manga focuses more on Ryuu's activities at school, but he gets a ''lot'' of attention from the fans whenever he does show up.
* ToyShip: As about half of the series focuses on the interactions between the toddlers, this is probably inevitable. Most common ships are Kotaro/Kirin, Kotaro/Taka, or Taka/Kirin.