This is a lot of fun. in the comments you can ask the next note about Our characters.

"Alone at last", Erika thought, taking her chopsticks out and opening her bento box. Suddenly everyone rushes in, taking a chair from the opposite table. "First one there is a rotten egg~!" said Shion, going as slow as possible. But somehow, everyone was slower..."Uwaah, I'm-" she is interrupted by the realization that she isn't...Erika is the rotten egg! "Ahahaha! You're the rot-ten egg, You're the rotten egg~!" she teased. Erika looked up with an indifferent face."Hmm? Why?", she asked

"'Cause you arrived first!", Shion replied.
"Too bad, I wasn't playing."

"Come over everyone, Eri-tan's the rotten egg!"she said. As everyone came over, making a lot of ruckus, she moves over to the opposite table. However, what she doesn't know is that Kizami also moved to the opposite table. Meanwhile...

"So what's the history of the class?" asked Seiko.
"Well, Virgilia came one year ago, but she was really shy until Gaap started to annoy her. Gaap was always here. Battler and Shion were pretty quiet during the first half-year, afterwards they were more talkative. Battler said he had problems with his family during that time but Shion would be more serious than usual and not talk about why she was so quiet."
"What about you?"
"Well I came here two years ago but there was only Gaap. However, it's slightly funny that all of us somewhat came in a group. For instance, me, Kizami and Mitsuki were in the same school before this one, and we all somehow went to this one. As for Ib and Mary, Garry was taking care of Ib and Mary before he became teacher so he decided to just become a teacher."

"That's nice! Then you have friends with you all the time! But anything weird about anyone?"
"Well, Shion-"
"Hi! Ya' talking about me?
"No, actually about a-another Shion." blurts Kurosaki.
"What's her last name?".
"Ummm...Falafel." he said, saying anything random that came to mind.

Kurosaki and Seiko moved to the opposite almost-empty table.
"I'm sure Erika or Kizami won't tell, right?" Kurosaki said.
They continued, whispering to eachother.
"Well, Shion...I'm not sure...she gets kinda' scary when she gets angry."
"I seee."
"But otherwise she's not 'mainstream' if you mean that. She can be nice if she wants to. So she's pretty awesome."