Upon arriving at the school, Ken Yagami - Michika's deputy - announced that she would be gone for the next three days.
Many students began to wonder why Michika was absent a couple of times a month.
After class, Naomi found a letter in her locker.
Kaya Igarashi, who had a locker next to her saw Naomi open the letter.
Kaya: I guess Akagi-kun sent you a love letter
Naomi: W-well, who knows...
Naomi was blushing when she was opening it, but when she read it she froze.
Kaya: Hey, everything okay Naomi-san?
Naomi had read the entire letter, and ran away.
Following is the content of the letter.
"I see that you think I am merely a projection of a certain person's imagination, however, I assure you that I exist.
Do you want to make sure? - Shion Urushibara"
Naomi tried to call Michika, but the latter did not answer, and also wrote to her on UMessage.
In the evening, Naomi could not sleep.
In the morning, Michika finally wrote her back
-What?
As Naomi did not sleep at night she fell asleep in the morning, when she woke up at noon she started texting with Michika
-What to do when a "certain person" attempts to break the rule?
-Ignore.
Naomi still tried to write with Michika however she blocked Naomi
Naomi felt as if Michika was not exemplifying the issue.
Naomi was about to put her phone away when she noticed one message in the "strangers" folder
It was a message from Shion Urushibara herself, her profile was complete, she even had a profile picture.
Naomi was furious, however, the thought occurred in her mind that perhaps such a person could indeed exist, and Tohru Ogata was simply simulating scenarios of talking to Shion.
-Are you really Shion Urushibara? Are you not… a certain person?
-Do you want to see more evidence?
-Yes
Shion send Naomi photos of her, and even her hand, and her house.
-Do you really think that could be "that person"?
-So, you exist.
What do you want from me?
-Shall we become friends?
As far as I know you are a very good candidate for a friend.
Naomi put away her phone, she was too confused and slightly terrified to process it all.
Meanwhile, Misaki was returning from the store, not paying attention to the road was thoughtful.
It was one of those moments when Misaki who didn't care about anyone began to wonder about Michika's strange excursions, even Yuuichi and Kana knew nothing about it despite being her closest friends.
Suddenly, someone dragged her back to the sidewalk.
Misaki: Hey what the hell are you doing?
Boy: I was trying to save your life..
You almost died at this pedestrian crossing.
Misaki: Whatever
Misaki looked at the guy who saved her.
Misaki: Let me guess, you are one of those rich kids what go to École d'Yomiyama?
Naohisa: Uhh, ermmm …. Yeah, My name is Naohisa Minamiyashiki, How did you know?
Misaki: Misaki Sakakibara, well I knew it because you look like one of them.
Naohisa: Uh, okay I guess I have to go..
Misaki: Wait, I was really going to die here?
Naohisa: Umm, If you were lucky you wasn't
Misaki: What do you mean?
Naohisa: I doubt you'll be able to escape from that speeding truck in time
Misaki: Thank you in that case.
Bye
Misaki on her way home again encountered Michika with two suspicious suitcases, this time she decided to follow her, which she later regretted
A man in a smart suit poked Misaki and whispered to her that she had better get out of here.
Out of the corner of her eye, Michika noticed her.
Misaki, however, heeded the gangster's advice and left.
On that day, both sisters began to feel unsafe in Yomiyama.
After class, Michika called Naomi to her.
Naomi entered the countermeasures office where Michika, Ken, Miyuki, and their assistants - Shouko Kozuki and Masayo Sumeragi, who had replaced Michika - were waiting for her.
Michika: Listen Naomi, there is a strong suspicion that your sister has inadvertently broken the rules of our class.
Ken: You know what that means, right?
Naomi: N-no?
Shouko: You have the choice to join your sister as a non-existent person, or you can consider yourself an only child for the rest of this class.
Michika: That's right, if there is a suspected violation of the rules then such a person ceases to exist, we tell you this so that you are aware of it.
You also have a choice.
Naomi: She seriously did it?
Michika: Yeah, probably.
But that's enough to denounce her existence.
Ken: In my opinion, you should join your sister, it will be difficult for you to live with her under one roof, at the same time pretending that you do not exist for each other.
Naomi, after much consideration, and taking into account her contact with Shion Urushibara, agreed to join Misaki and Tohru as a non-existent person.
The next day Naomi and Misaki, like their parents 27 years ago, ceased to exist for their class.
History repeated itself, however, the class was still safe.