A group of young middle school students, including Madoka Kaname, make a deal with a cat-like creature named Kyubey: They'll be granted any wish they desire in exchange for obtaining magical powers, which they will use to engage in battle with evil witches. There are currently 12 episodes available to stream. (Note: this show is not available on UK Netflix.)
Magi: Adventure of Sinbad
Loosely based on the stories of One Thousand and One Arabian Nights, this spin-off of the popular Magi series (see below) follows Sinbad and his origin story as he rises to become King of Sindria. There are currently 13 episodes available to stream.
Magi: The Labyrinth of Magic
Set in an alternate timeline of the ancient Old World, heavily inspired by Middle Eastern mythos, the story follows a young Aladdin as he and his friend Alibaba go on a magical treasure hunt that will change their lives forever. There are currently 25 episodes available to stream.
Set in an alternate time between the Edo and Meiji periods, Mushishi is a gentle supernatural anime with a quietly subtle approach. Ginko, the protagonist, is one of the few people who can see and interact with Mushi, primitive creatures with supernatural powers that can cause problems for those who encounter them. There are currently 26 episodes available to stream on Netflix.
The iconic Naruto was a gateway drug to many an anime fan, and its manga remains the third best-selling in history. The eponymous protagonist is guided on his journey to become the strongest ninja in the world by the spirit demon living within him. There are currently 156 episodes available to stream. (Note: this show is not available on UK Netflix.)
One Punch Man
Based on the hugely popular superhero web comic, One Punch Man does exactly what it says on the tin. The eponymous hero, also known as Saitama, is a highly over-powered hero whose single punch can take on any enemy. Unfortunately, his endless victories have left him bored and seeking an enemy who's truly worth the bother. There are currently 12 episodes available to stream.
Ouran High School Host Club
Haruhi is a scholarship student at the elite Ouran Academy, who stumbles into the school's Host Club, a group of six exceptionally handsome male students who entertain their female classmates for a handsome fee. After Haruhi breaks an antique vase, the club order payment for the costs in service to the club as an errand boy. There's just one small problem... There are currently 26 episodes available to stream. Note: this series is not available on UK Netflix.)
The anime that defined a generation, you'll struggle to find a millennial who didn't grow up watching a ton of Pokémon. The series is a bona fide phenomenon, and that doesn't even get into the many games, movies and assorted paraphernalia surrounding it. The adventures of Ash and Pikachu captured the imaginations of millions, and there are several series available to watch on Netflix. There are 48 episodes of Pokémon XYZ available to stream. There are 92 episodes of Pokémon XY available to stream (this series is not available on US Netflix). There are 52 episodes of Pokémon Indigo League available to stream (this series is not available on US Netflix). There are 43 episodes of Pokémon Sun and Moon available to stream.
During the early Meiji period, a nomadic swordsman with an infamous reputation finds himself at a martial arts school, where he ends up caught in the middle of the opium trade. There are currently 95 episodes available to stream.