This girl is so unlikeable
Well, that’s what helps make the potential character growth and relationship development over the course of the story that much more significant, now doesn’t it? If she can go from this state to someone who shows actual legitimate concern and fondness for the male lead, wouldn’t that be something?
Hell, it can be argued she kind of already did, to at least a tiny extent by putting in that effort at the start actually finding the boy’s locket (at the very least, it’s a positive aspect of her stubbornness, possibly a sign of a principled individual that won’t leave a task unfinished). But yes, abrasive personality, which was only exasperated by Raku’s own stubbornness that escalated things when they properly met in class the first time. They were both arguably at fault for pushing each other to hate each other then due to stubborn pride, which put us where things stand in these first few chapters.