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This is the episode in which Mitsuki and Mikey take the farting powder.
The Old Lady Robots from "Saving Face" return in this episode. They are now called Robo-Grannies.
In this episode, commercials from previous episodes are shown.
This marks the first time that Yes Man has ever appeared as an actor within a Lilymu episode, as he temporarily takes Gonard's place while Gonard is missing.
Goof: When Ozu says that he wishes to bet 1 yen, he holds up a brass colored coin with a hole in the middle. However the 1 yen coin is neither brass nor holed (it is aluminum and solid). The brass colored holed coin is the 5 yen piece, not the 1.
In this double episode, the cast sing ten original songs, parodying different musical genres ranging from hip-hop to opera.
This is the first time Lily ever agrees to a suggestion by Mikey, about the ice cream.
This is the first appearance of the Kappas.
We learn that Lily wore braces as well.
The episode`s title is a spoof of a movie`s title called "Free Willy."
When Gonard is making his "If space is time, then time is space," speech to Lily and Guano, a picture of a large black box and the earth appear in the background. This is most likely a reference to the Black Monolith from Stanley Kubrick's 2001: A Space Odyssey.
In this episode Mikey is pretending he is Ozu's son. But Guano was Ozu's son. It was revealed in the Christmas special.
Brozu has a Yes-Man just like Ozu, but his name is No-Man.
Throughout the episode, Ozu frequently mentions that he dislikes the excessive use of cards in anime plots. His business card even says "I hate cards."
When Mikey kisses Mitsuki, she deflates and blows away followed by hearts, and Mikey blushes leading some to believe that he may have feelings for her.
This is the first time Guano says something besides "Guano" in the LilyMu scene (he says "yaaaaay!")
The song chimney sweep Guano was whistling is "Chim Chim Cheree" from Disney's "Mary Poppins"
The items that were thrown through Ozu's old fence include a TV, a kitten, an old lady, and later, a bag of toys.
According to Guano, LilyMu is finished taping its first season since Mikey came to Japan.