Nanami wakes up one morning to find an egg in her bed. Thinking that she has laid the egg herself, she panics but soon starts nurturing the egg.
"Nanami's Egg" provides examples of:
- The Chain of Harm: Discussed. Utena and Anthy have a brief discussion about the concept of reincarnation and parents passing down things to their children through the ages, exemplified in how they raised said children. Nanami is led to believe she has to abandon her egg, but when she returns for it the egg hatches into something which violently rejects Nanami as its mother and repays her earlier abandonment by leaving.
- Does This Remind You of Anything?: The whole episode is a metaphor for menstruation and teen pregnancy.
- Hidden Depths: Juri, of all people, is shown to be an expert bowler.
- Hypocrite: When a misunderstanding makes Touga believe Nanami is attracted to girls, he lectures her about how homosexuality is wrong, when he himself also sleeps with guys.
- Imagine Spot: Nanami has many of those over the course of the episode, where other character discovers that she has laid an egg and makes fun of her for it, calling her a space alien. These imagine spots always end with Nanami being put on a cage together with other animals that lay eggs.
- Insane Troll Logic: Nanami isn't exactly the most logical person in this setting, but her thought processes during this episode are a clear example of this. When she finds the egg, her immediate thought is that someone must've put it there so everyone will think she laid it. She then somehow gets the mistaken idea that all girls lay eggs when Miki explains some mammals do indeed lay them and spends the episode hiding the egg she found because she doesn't want to be mocked for being a late bloomer.
- Kick the Morality Pet: An unintended example. Anthy's despondent expression after Chu-Chu returns implies both that she maybe went too far hurting Nanami and she regrets the harm Chu-Chu experienced while he masqueraded as Nanami's egg.
- Mistaken for Lesbian: When Nanami asks Touga if he prefers boys or girls (she's talking about the gender of whatever is inside the egg), he misinterprets the question and believes that she is talking about his sexuality and answers "Girls, obviously," which then Nanami replies with "Really? Me too.".
- My God, What Have I Done?:
- Nanami regrets abandoning the egg out of fear it'll be eaten, but when she returns for it's become monstrously big and the thing that hatches out abandons her. While that part seems to be a dream, Nanami screams out in horror when she finds the broken egg shells in her bed.
- The ending of the episode largely implies the egg Nanami was carrying around all this time was Chu-Chu, enchanted by Anthy as yet another attempt to mess with Nanami. However, the very last shot before the end credits shows Anthy appearing to visibly regret something, indicating she feels she went too far to screw with Nanami's head, and Chu-Chu may have been harmed by the experience as well.
- One Dialogue, Two Conversations: Nanami and Touga have a conversation where she asks him if he would prefer a boy or a girl. Nanami talks about a kid (which she thinks will get hatched from an egg she got...It Makes Sense in Context); Touga thinks she's talking about boyfriends and girlfriends, so when she says she would like a girl, Touga ends up thinking she's a lesbian.
- Running Gag: Nanami's imagine spots.
- Stronger Than They Look: Nanami can barely lift Juri's bowling ball of the ground, but Juri can balance the thing on her shoulder with ease.
