Maika Sakuranomiya in her explanation of Anti-Iroha Alliance's plan.

Sometimes a person will only remember once. But these people usually remember it once they hear it, and have repeated it over and over again, as if considering it a natural law. It was a plan made by Rettsuma and Mana Kanaka, with gentle yet highly influential persuasion, the anime villains could join easily. Such an aesthetic yet brilliant trick attracted the interest of the villains easily without draining human resources. Is the Anti-Iroha Alliance a bit different, I honestly swear.