Welcome to Demon School! Iruma-kun Temporada 2 Episódio 3

Someone had done something to change Ameris personality! Shes usually confident and stern, but now, shes now meek and dainty and the student council cant hide the fact that theyre not sure how to handle the situation. While all this confusion is going on, Ronove Romiere, the president of the Disciplinary Battler comes to try to steal Ameris position. He proposes a dissolution election against the student council. Who is behind the changes in Ameri? What will be the result of the election?