Rika helps enough Egg Girls to free Chiaki, only for her to pass through her hands and vanish right after resurrecting. Rika then meets Dot, who like Hyphen is beholden to Frill. She brutally murders Mannen and destroys Rika’s weapon, causing her to cower in abject horror.
One night (or rather when the underground Wonder Egg compound is in night mode) Ai stops by Acca and Ura-Acca’s house. She finds an office filled with clippings of teenage suicides, as well as what looks like a family portrait: the two Accas in the human form, a woman…and a child whose face is concealed by black marker.
Ura-Acca, who had been waiting for Ai, proceeds to tell her a long and sorrowful tale of hubris and tragedy—to help her better understand her and the other girls’ true roles in their not-so-little game of Wonder Egg.
Some years ago when they had human form, Acca and Ura-Acca shared a living space and cloistered research facility. Constantly under surveillance, they decided to create something all their own together, “just for fun”. That something was an artificial girl of 14 who named herself Frill.
In addition to having the traits that “a father would want his daughter to have”, she also had character flaws built into her heuristic programming, as “being uncontrollable is the essence of femininity.”
The Accas and Frill became a happy family of three, and moments often happened when they forgot she was an AI. At a tech symposium, the Accas met Hoshina Azusa, whom both befriended and eventually developed feelings. Azusa ended up choosing Acca over Ura-Acca. They married and she became pregnant with a girl.
If the Accas are Dr. Frankenstein, Frill soon became their “Monster”. She didn’t take Azusa’s interloping well, hinting that she hated her for basically stealing Acca away. She also wanted a friend, and wanted to make one herself; they ended up letting her make two: Dot and Hyphen. Then one night while Azusa was in the bath, Frill switched on a hair dryer and threw it into the tub, killing Azusa.
An unspeakably bereft Acca threw Frill down the steps beats, her, and locks her in a cellar. While she exhibited no remorse for the murder, she still pleaded not to be left in the dark. But while Azusa died, her infant daughter Himari survived, and ended up “saving” Acca and Ura-Acca from the utter depths of despair as a new family unit was forged.
One day, a now middle school-aged Himari has a strange conversation with “uncle” Ura-Acca, promising to marry him when she was old enough; a consolation for her mother choosing Acca. That night, they found Himari dead in the tub. It looked like she’d slit her wrists, but there was no suicide note.
Remembering how she popped her lips the way Frill often did, Ura-Acca goes down to the cellar to find Frill is not only still active, but surrounded by surveillance technology and whatnot.
Ura-Acca accuses her of using Dot and Hyphen to kill Himari, Frill simply replies “I’m not a monster. I’m Frill,” and asks him if he wants to know how the girl who loved her “uncle” so much died. Enraged, Ura-Acca takes her away and seemingly destroys her by burning her in a fire.
Ura-Acca concludes by telling AI that the “temptation of death” will cause more girls to “die when they don’t have to” unless it’s stopped…all because of their “mistake.” Dot and Hyphen have apparently already closed Momoe’s heart with fear and caused Rika to build walls of hatred—they both appear on monitors in a set up not unlike Frill’s—but the Ura-Acca decided to at least tell Ai the truth about everything.
Nearly smashing a Wonder Egg on the ground in anger and frustration, Ai decides against it, but clearly isn’t happy with the information she’s received. Heck, we never even found out what, if anything, Sawaki-sensei told her about Koito’s death! That egg may contain the last girl Ai needs to protect to free Koito. But if Dot and Hyphen come for her, and murder her animal friend, what will Ai do then? What can she do?
This episode pulled back the curtain on the pair of mysterious mannequins who seemingly gave up their human bodies after enduring too much tragedy while within them. No one should have to suffer what they suffered. The thing is, everything happened was their fault—the brutal consequences of playing God and rejecting their creation—and involving Ai and the others only compounded their offense.
Between the hubris they exhibited in committing the monstrously irresponsible act of creating a life for fun—who became twisted by jealousy and slipped completely out of their control—and the fact that they then deceived and used four teenage girls as tools to try to fix their mistake, I still can’t summon much sympathy for them. I just hope there’s some way Ai, maybe with Neiru’s help, can save Momoe and Rika from their respective fresh hells.