- Actor Allusion: From the Drama CD, Kobato once utters "Guard Skill: Hand Sonic", and Maria once quoted Touma's Catchphrase word for word, culminating in a headbite akin to that often done by Index (who shares the same voice actress as her). The Squid Girl Shout Outs are a combination of this and Ascended Meme, due to the Ika Musume parody in To Aru Majutsu no Index-tan Episode 3.
- Casting Gag: The casting department for the drama CDs and the anime must have clearly thought of Kuroneko and Index when they drafted Kana Hanazawa and Yuka Iguchi to voice Kobato and Maria, respectively.
- Portmanteau Series Nickname: Boku Tomo or Haganai. Yes, HAganai. It's made up of the particles in the title as opposed to the main words, and when "wa" is used as a particle, it's actually spelled with a "ha" character.
- Relationship Voice Actor:
- Kobato (Kana Hanazawa) and Maria (Yuka Iguchi) used to be close friends in Bakemonogatari (as Nadeko and Tsukihi).
- Add Sena (Kanae Ito), and you have a ditzy demon buddy and two Goddess Hosts in the mix...
- The English dub gives us two characters who will go on to The Onmyo Academy of Tokyo Ravens.
- The majority of them are the residents of the world of A Certain Magical Index.
- Running the Asylum: An incredibly fast example, as the alternate "Plus" manga has already started up, and seems to be written by a Kodaka/Sena shipper. Though it's only begun to be translated, it already seems to be working on turning Yozora into an even bigger bitch than before. The Die for Our Ship elements are particularly jarring given that Yozora wasn't comfortable with the concept of romance in the first place, and wanted to be just friends anyhow. Thus it was a ship that sunk itself.
- Torch the Franchise and Run: Hirasaka's ongoing problems with his publisher and editors, along with his increasing frustration with a certain audience of readers who were solely focused on the romantic side of the series, caused him to end the novel with No Romantic Resolution and only a hint of a relationship going forward.
Trivia / Haganai