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.
Please, stop it, Ibuki-san.
توقّفي رجاءً يا إيبوكي-سان
Lass gut sein, Ibuki-san.
Para, por favor, Ibuki.
Para, por favor, Ibuki.
Arrête, Ibuki.
Per favore, smettila, Ibuki-san.
Por favor, pare com isso, Ibuki-san.
Пожалуйста, не кричи, Ибуки.
พอเถอะค่ะ คุณอิบุกิ