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.
Yeah! I've wanted it so much!
!أجل! أردتُ اقتنائه
Die brauch ich unbedingt!
Sí. La quiero.
Sí. Lo quiero.
Hai ragione! Lo vorrei così tanto!
É mesmo! Eu queria muito esse vestido!
— Угу! Вот бы и мне такую!