Suika Theory
What if there was a character that could only say "rururururu"?
Her name would be Ruru. She would talk in sentences composed entirely of "rururururu". It will become annoying for the heroines very quickly which will make them want to beat her up faster. Ruru will be the mastermind behind an incident, the goal of which is to make the entire populace speak only in "rururururu" to remove social inequality, despite the fact that everyone was speaking Japanese anyway. She would not agree that her idea is stupid when it is pointed out to her. All of her spellcards will have names with a legible first half, but the second half will be all "rururururu". It will turn out that the only reason Ruru speaks in that way, is because she is a foreign youkai and never learned proper Japanese. In the good endings, she starts to learn Japanese, but her sentences still contain mostly "rururururu".
What if Orin visited you every night and whispered cryptic things in your ear, while getting awkwardly close, then meowed and disappeared?