Osana, Oka, Ayano, and Kokona were sitting together at one of their classes at Akademi High School. They were all bored, so they tried looking for a few things that would entertain them before the rest of the class came. Osana crumpled up a piece of paper and threw it at Ayano’s head.
“Who threw that at me?” asked Ayano.
“It wasn’t me,” said Osana.
“Nope,” said Kokona.
Oka had fallen asleep, making Ayano believe it was Oka who threw the paper at Ayano.
“Wake up and stop throwing paper at me, sleepyhead!” said Ayano as Oka woke up.
"Huh? I don't remember doing anything here except for sleeping," said Oka.
Out of nowhere, an anthropomorphic coin appeared out the window.
"I know how to stop this argument myself," said the coin to himself as he threw some dust into the classroom. The coin quickly left, and the girls were confused at what the dust.
All 4 girls began coughing until they fell unconscious, unaware of what was going to