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.
But...
...لكن
Aber meine Mutter sagte, …
Pero mi mamá me dijo…
Pero mi madre me dijo…
Mais malgré ce que j’avais fait,
maman m’a dit…
Finché un giorno
Mas...
Но потом…