Daa! Daa! Daa! UFO Baby (2000)

Tokyo, Tomobiki Town. Lum, the gorgeous princess of the invading alien race of Oni is smitten with high school student Ataru Moroboshi. A dedicated womanizer, Ataru is unfazed by Lum’s fierce electric shock attacks and continues his daily hunt for pretty girls. With a host of other unique characters, including girl-next-door Shinobu, elegant shrine maiden Sakura, Lum’s best friends Oyuki, Benten, and Ran, Buddhist Monk Cherry, Ten, the little brat, heir to a wealthy family Shutaro Mendo and the masculine beauty Ryunosuke…it's a classic slapstick love comedy where anything goes!

The dark fantasy follows a high school sophomore named Akihito Kanbara. Although the boy appears human, he is half Youmu and invulnerable to wounds because he can heal quickly. One day, Akihito meets freshman Mirai Kuriyama when it seems she is about to jump from the school rooftop. Mirai is isolated because of her ability to manipulate blood, which is considered heresy among members of the spirit world. Disturbing events begin to unfold after Akihito saves Mirai.

As one of the thousands of Japanese students afflicted with "chunibyo," a state where they're so desperate to stand out that they've convinced themselves that they have secret knowledge and hidden powers, Yuta spent most of his middle school years living in a complete fantasy world. He's finally managing to overcome his delusions but his chunibyo have attracted the attentions of another sufferer, and she's decided that this makes him her soul mate.

Kyotaro Ichikawa, a boy barely clinging to the bottom rung of his school's social ladder, secretly believes he’s the tortured lead in some psychological thriller. He spends his days dreaming up ways to disrupt his classmates' peaceful lives and pining after Anna Yamada, the class idol. But Kyotaro's not nearly the troubled teen he pretends to be…and it turns out Anna's a bit odd herself!

Yōto Yokodera is a schoolboy who is unable to express his true feelings freely. After hearing about the wish-granting Stony Cat, he decides to try and make an offering to lose his facade, only to meet Tsukiko who wishes instead to be more discreet with her feelings to become more adultlike. Who'd have thought the rumors of the wish-granting Stony Cat turns out to be true; transferring the facade that Yōto wishes to lose into a classmate who needs it more and making it difficult for Tsukiko to show even the slightest of emotions on her face. Being on the same boat, they both search for ways to remedy the situation.

Alien frogs come to take over the planet & get into all kinds of trouble while living under the roof of a small family.

Ranma Saotome, a teenage martial artist, and his father Genma travel to the 'cursed training ground' of Jusenkyo in China. There, despite the warnings of the Chinese guard, they fall into the cursed springs. From now on, whenever Ranma is doused in cold water, he turns into a girl and a cute, well-built redhead at that. Hot water changes him back into a man again, but only until the next time. To make matters worse, his father engages him to Akane Tendo, a girl who hates boys.

In Earthclear, everyone is born into a fixed role, and villagers are the weakest of all. Most never rise above Level 5—except Koji Kagami, who is Level...999?! On a monster hunt, he meets Alice, the Demon King's daughter, and discovers they share an impossible dream: coexistence between humans and demons. In a world destined for conflict, they charge into battle to defy fate and shatter the rules.

Ashiya has spent the first seven days of high school stuck in the infirmary because of a youkai attaching itself to him. He ends up asking the owner of a small tea room called the "Mononokean" for help. This is a tale involving the very morose owner of Mononokean guiding the youkai that happened to wander into this world go to the next world.

A diligent teen winds up living with his spunky childhood friend, a trainee witch, to protect her from a dire prophecy. But can they survive high school?

While on a field trip to the Tokyo Tower, three middle school girls suddenly find themselves in another world and must save its princess to return home.

Mayuko Chigasaki is an ordinary girl from the countryside, who now is attending university in big city Tokyo. She struggles each day to make ends meet while studying for her exams, barely scraping up the yen to afford bus fare to and from school. And at the end of the day, she comes home to a gluttonous, freeloading alien living in her closet!

Asahi Kuromine is a high school student who supposedly cannot keep a secret. One day he spots his crush Yoko Shiragami, unfurling a large pair of wings from her back. She explains to him that she is a vampire and is only able to attend a normal school on the condition that no one discover her true identity. Asahi swears to keep her secret but finds it hard to maintain seeing as how Yoko herself is an airhead and Asahi's friend Mikan keeps bullying the two of them.

Ko's new companion, Nazuna, could offer him dark gifts and a vampire's immortality. But there are conditions that Ko must meet before he can sink his teeth into vampirism, and he'll discover just how far he's willing to go to satisfy his desires.

Mizuki Ashiya is on a mission: disguise herself as a boy and enroll in a male boarding school to meet her idol, high jump star Izumi Sano. But after successfully infiltrating the school, she discovers he’s suddenly quit the sport! Now Mizuki must dodge suspicion, protect her cover, and somehow reach the boy she came all this way for—all while surviving the chaos of an all-boys dorm!

Ayato Kamina, a 17-year-old high school student, lives in Tokyo Jupiter oblivious to the world around him, having been raised to believe that the rest of civilization has been destroyed; but everything changes when a mysterious alien civilization invades his home.

Curtis Newton, aka Captain Future, is an orphan. His parents died in their artificial satellite while he was an infant. His father was a scientist, who has abandoned earth for the satellite to dedicate his life for science along with his aging friend the genius Dr Simon Wright. Wright senses his death, and decides to implant his brain in a mechanical container. They both manufactured a superior robot and an android. Captain future dedicated his life to fight evil along with his three men, the brain, android, and robot.

Shikimori seems like the perfect girlfriend: cute, fun to be around, sweet when she wants to be… but she has a cool dark side that comes out under the right circumstances. And her boyfriend Izumi loves to be around when that happens!