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 we had a lot of fun.
لكنّنا استمتعنا
ma eravamo felici.
mas nos divertíamos muito.
но мне всё нравилось.