Turns out the one spreading the rumors was Hashimoto, who did so at the behest of Sakayanagi. Shortly thereafter, Sakayanagi appears before Class C and she informs them she has evidence regarding the rumors about Ichinose.
Y-You don't want it?
لا-لا تريدها؟
W-Willst du sie nicht?
¿Me los vas a rechazar?
¿No los quieres?
À moins que tu n’en veuilles pas ?
N-Non...
Você não quer?
Н-не хочешь?