The main characters of " My Little Monster" appear as ogres in the anime version of Hozuki's Coolheadedness.In episode 58 of Fullmetal Alchemist: Brotherhood, there's an elderly woman that has an uncanny resemblance to Dante, the antagonist of the first Fullmetal Alchemist series.The third volume of Puella Magi Madoka Magica: The Different Story has a brief appearance of Michuru Kazusa from Kazumi Magica.Mami and Kyoko make brief appearances in later chapters. Subverted in Chapter 5 where he plays a larger role in the plot. Kyubey makes a cameo in Chapter 4 of Puella Magi Kazumi Magica.Doubles as a Mythology Gag, considering the circumstances. Puella Magi Oriko Magica has Charlotte, a popular witch from the parent series, make a brief appearance in chapter 3.Love Lucky: In chapter 56, Yura and Makoto (from mangaka Katsu Aki's more famous work, Futari Ecchi) have a walk on cameo as they pass by Kirari, who jealously contemplates how much she wants to be a "normal happy couple" like they are.Fairy Tail has a few cameo especially from the creator's previous manga Rave Master.In the second episode of GA: Geijutsuka Art Design Class anime, characters from Shoulder-a-Coffin Kuro, the mangaka's other work, can be seen in the background.The Negima! Magister Negi Magi manga has dozens of cameos, mostly of fighting game characters, especially during the first Tournament Arc.In episode 2 of Aikatsu!, there's a background character ◊ who looks exactly like Lalah Sune from Mobile Suit Gundam, which isn't that surprising considering the companies who own this franchise.Similar to that, in episode 11 of the series, Farlan and Isabel from the No Regrets light novel both appear to watch Jean's Snow White play as audience members.That Titan was Revo of Linked Horizon, the singer of the band of the same name who did the opening songs of this and the main series. In the last episode of Attack on Titan: Junior High, there's a Titan with long hair and sunglasses that yells out "Bravo!!" as Levi sings.