- Actor Allusion
- Look at Haruhi's face and tell me that isn't Konata! Her voice in Haruhi-chan even sounds like Konata's.
- It is her.
- Yuki Nagato sings "Paradise Lost" by Minori Chihara at the end of Episode 6. She also plays Kagura Tsuchimuya in that series.
- Achakura holding an umbrella to open a door is a reference to Rozen Maiden, seeing as Natsuko Kuwatani does her and Suiseiseki. And hearing her say DESU~ really reminds people of Suiseiseki, DESU~
- Hey, It's That Voice!
- Name's the Same - Kimidori the male living balloon animal is not Emiri Kimidori the female humanoid interface from the main series. We think.
- To western audiences, Tsuruya's obsession with cranes must be a little strange because she doesn't really show it in the actual series. Her obsession with cranes is actually from her name. Her name comes from a popular chain of hotels that utilize the crane as their symbol, due to "tsuru" being the Japanese word for "crane".