Hylas, Boogiepop has not a "storyline" in the traditional sense of the word. It's focused on the perception every character involved in the series has of certain events. That's why we see several times the same scene from different points of view, that's why there's not a linear plot to follow and everything seems very confusing in it. I've seen 8 episodes of it and it's more or less like you said for the fist 4 episodes. I think many people don't like it above all because there's not a straight story to follow. And yes, it's freaky, sometimes even more than Lain