Are we watching a machine getting jealous? This is like when AI boyfriends go berserk and become toxic, isn't it? This episode is excellent; it has battles that keep you on the edge of your seat and make it clear that the Dragons of Earth aren't invulnerable. Karen, THE WOMAN YOU ARE! I loved you in the manga, I love you in the anime, and in all your versions, you'll always be my favorite. I don't want to give away any more spoilers; this episode is totally worth it. Watch it.