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.
Nothing to forgive. 
There's no real harm done.
لا شيء لأسامحه، فلم يتضرّر أحد
Es wurde ja niemand verletzt.
No es que me hayan hecho daño.
No es que me hayáis hecho daño.
Y a rien à pardonner,
je suis même pas blessé.
Non è questione di soprassedere o altro. 
Alla fine non ci hanno mica fatto male.
Não há nada a perdoar.
Não houve nenhum dano real.
Так ничего и не случилось.
ปล่อยอะไรนี่ ฉันไม่ได้เป็นคนหาเรื่องสักหน่อย