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.
My sister was so happy.
كانت أختي بغاية السعادة
Meine Schwester war überglücklich.
Non avete idea di quanto fosse felice.
Minha irmã ficou muito feliz.
Сестрёнка очень обрадовалась!