I'm somewhat bemused by the walls of text that have sprung up to dissect Kurumi's jealousy in detail. I thought it was pretty transparent?
If there's one thing I have learned from this forum, it's that no matter how clear cut smth is, no matter how unambiguous and small a look, a word or a gesture may be, there's always someone who can write a whole thesis deconstructing it to the tiniest detail xD for better or worse