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.
that you've already fallen 
in line with Nagumo.
أنّك انزحت إلى ناغومو بالفعل
dass Nagumo dich auf seine Seite gezerrt hat.
que ahora obedeces a Nagumo.
de que ahora obedeces a Nagumo.
que tu es à la botte de Nagumo,
maintenant.
del fatto che ti sei schierato 
dalla parte di Nagumo.
que você já se alinhou com o Nagumo.
что Нагумо уже прибрал тебя к рукам.