I watched The Melancholy of Haruhi Suzumiya recently. The main character can bend reality to her wishes. She is unaware of this. But it makes her basically a monster, because the other characters are locked in a constant struggle to prevent her from getting bored or angry, in case she remakes the world without them in it. By the end of the series this is not resolved at all, she is still a monster with the other characters in her thrall, it's just that the last episode is somewhat calmer as if they've arrived at a kind of stability. Also there's eight episodes in the middle that are all nearly identical, because they get stuck in a time loop due to her unwillingness to permit the end of summer.