Yesterday I was looking around the school dorms and found Yuuma-chan rubbing his banana while calling Himari-chan name. Himari was occupied with Mitsuki so I could just ask Chii why.
Chii scolded me for peeking into boys rooms through mirrors. But later explained what was thar about.
If I understood well, that's called masturbation. It's when you feel happy by self while thinking on other. I wanted to try but Chii didn't let me to. Later, she talked to me.
"Did you see any other person doing it, Tsumugi?"
"... Quartet Star fan. Both of them"
"No one else? Like, saying Chii Chii Chii I love you, while heavy breathing?"
"..."
"..."
"No one else."
"Kuyachii!"
"I saw a girl heavy breathing though, while saying Chii aooo Chii gaooo Chii vrrruuuuuuum"
"... what?"
"What?"
"Why didn't you say a girl was masturbating too?"
"Was she?"
"Yes."
"But someone can't masturbate without a banana right?"
"..."
"..."