* ActorAllusion: In episode 10 of season 1, [[Creator/YokoHikasa Shino]] is shown [[http://lurei.files.wordpress.com/2010/09/syd-e10-01-shino-or-mio.jpg cowering in fear and covering her ears]] in the way [[Manga/KOn Mio did]]. Bonus points, considering it was the exact situation (i.e., Tsuda recalls how he injured his finger with a broken plate).
-->'''Shino:''' D-Don't! I can't stand painful stories!
* AuthorExistenceFailure: Creator/MiyuMatsuki (Suzu's mother) passed away on October 27, 2015 due to Pneumonia.
* CastingGag: Furuya enjoys old-world snacks, uses 80's slang, does her calculations on an abacus and even her fanservice is old-school. She's played by HiranoFumi, best known as the voice of Lum in the 80's series UruseiYatsura.
* FanNickname: Chinese viewers call this series ''Student Council of [[VulgarHumour Dirty Jokes]]''.
* TalkingToHimself: Whenever Shino speaks to Shiho of the idol group Triple Booking.
Watch Takatoshi drag Shino all the way back to ''Manga/SeitokaiYakuindomo'' before she puts her mind into the gutter.