A harem includes three or more characters who potentially show romantic interest in a male protagonist. The sex, gender, or orientation of the harem members is irrelevant as long as they exclusively, or at least primarily, are vying for the affections of the same individual - who may or may not reciprocate towards one, several, or none of these romantic rivals.
Horror anime create an atmosphere of unease. Like a Mystery, they encourage viewers to learn more about their world... but there may secrets that are better left unexplored. Through eerie music and sounds, visceral or disturbing imagery, or startling moments, works of Horror make you worry about what gruesome thing is coming next.
These anime delve into the world of competitive Sports, ranging from team-based to individual participants. From Baseball or Basketball, to track and field or combat-based sports, these works focus on the athletes and those around them who show their support.