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.
I knew it was coming,
،كنت مُتوقّعة
Ich wusste, dass es
schwierig sein würde,
Ya lo sabía,
Ya lo sabía,
Comme je m’en doutais,
Ci ho provato pur sapendo
come sarebbe andata...
Eu sabia que estava
chegando o aniversário,
Конечно, я понимала,