Ensemble Darkhorse: 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.
Fan-Preferred Couple: Between Inomata and Yuki's competition to be with Ryuuichi, a considerable amount of fans are cheering for the winner to be Kamitani.
Even after realizing that the girl he fell for is Ryuuichi, Inui still gets easily flustered looking at him, especially when he sees him wearing an apron shirtless, a reaction that mirrors Yuki's (who is confirmed to have a crush on him).
When Ryuuichi disguises himself as a girl, Kamitani quickly puts himself in the role of his boyfriend to get Inui away.
Following that, when Inui is close to find out that the girl he likes is Ryuuichi, Kamitani threatens to send Inui flying if he hits Ryuuichi when he finds out.
Yuki is actually jealous of Kamitani for being able to roll up Ryuuichi's sleeves.
Les Yay: Quite a bit between Inomata and Yuki as they become closer friends. Yuki is quite prone to remarking Inomata cuteness and call her a pet name Maria-chan.
Toy Ship: 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.