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.
We don't need baseless 
accusations in our lives.
لا حاجة لنا بادّعاءات عارية من الصحّة في حياتنا
Ohne Beweise ist das unangebracht.
No quiero problemas si no hay pruebas.
No quiero problemas si no hay pruebas.
C’est une plaie,
d’être accusés sans preuve.
È un problema per noi venire accusati così,
senza uno straccio di prova.
Não precisamos de acusações
infundadas em nossas vidas.
А то неприятно,
когда с ни фига бочку катят.
เพราะการถูกหาเรื่อง
โดยที่ไม่มีหลักฐานมันก็ยุ่งยากน่ะ