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.
It's nonsense.
ذلك هراء
Das ist doch Unfug.
Es mentira.
Es mentira.
Ce sont des bobards.
Sono tutte falsità!
Isso é bobagem.
Бред и враньё!