Ai Yori Aoshi (藍より青し)

Hanabishi Kaoru is a junior in college, living out an ordinary life of studying and friends. One day, he meets Sakuraba Aoi, an old almost forgotten friend, to whom he is apparently engaged. Together, the two rediscover aspects of their pasts that they had tried to suppress while setting out in their lives with one another. Unfortunately, there are a lot of unwanted guests who keep interfering with their romance.

Main Title	Ai Yori Aoshi (藍より青し)
Type	TV Series, 24 episodes
Year	11.04.2002 till 26.09.2002
Categories	Boing, College, Comedy, Daily Life, Harem, Manga, Romance, School Life, Seinen, Sudden Girlfriend Appearance
Resources	Allcinema, ANN, Official page

Tokimeki Memorial: Only Love (ときめきメモリアル OnlyLove)

Aoba Riku has just transferred to a new high school because of his father's job, and things aren't quite what he expected. The headmaster's secretary controls the school while espousing the virtues of academic freedom, the teachers are even stranger than normal teachers, and half the student body is walking around with animal ears on. On his very first day, Riku is unfortunate enough to find himself at the center of the student council's latest event, which has him running for his life. All this on top of the normal high school rigour of popularity contests, crushes, and homework makes it unsure whether Riku will be able to survive this new school.

Main Title	Tokimeki Memorial: Only Love (ときめきメモリアル OnlyLove)
Type	TV Series, 25 episodes
Year	03.10.2006 till 27.03.2007
Categories	Daily Life, Dating Sim - Visual Novel, Harem, High School, Love Polygon, Romance, School Life, Seinen, Sudden Girlfriend Appearance
Resources	Allcinema, ANN, Official page

Onegai Teacher (おねがい☆ティーチャー)

The story is about Kei, a guy who accidentally hangs out at the lake where Mizuho appears when she gets out of her spaceship. But when he thinks of it as a dream, the next day at school the woman who takes over class is the same one as the one he saw at the lake!

Utterly confused, he still thinks it's a dream, but when she moves in as his neighbour and he helps her out, things are really getting weird and they even are forced to marry because of it. But how do you marry an alien while nobody is supposed to know about the marriage - nor the fact that the woman is both an alien and your teacher?
Not even mentioning that the teacher/alien is a gorgeous woman ... and that some classmate already has her eye on Kei.

Main Title	Onegai Teacher (おねがい☆ティーチャー)
Type	TV Series, 12 episodes
Year	10.01.2002 till 28.03.2002
Categories	Aliens, Humanoid, Romance, School Life, Sudden Girlfriend Appearance
Resources	Allcinema, ANN, Official page

School Rumble (スクールランブル)

Tsukamoto Tenma is an ordinary 2nd year high school student who has fallen in love with one of her classmates, Karasuma Ooji. However, currently she is unable to confess her feelings to him. To make things worse, she found out that Karasuma is transferring to another school in a year. On the other hand, Tenma's other classmate, Harima Kenji (who is a delinquent) is also in love with Tenma. Not being able to confess his feelings, Harima gets depressed day by day.

Tsukamoto Tenma is always chasing after the rather unusual Karasuma Ooji, to no avail. Her over-the-top methods don't even seem to register, but she keeps trying. Harima Kenji, the class rebel, is desperately trying to confess his feelings to Tenma, also with no luck. It's a comedy love-triangle, with humour that comes in from left field!

Main Title	School Rumble (スクールランブル)
Type	TV Series, 26 episodes
Year	05.10.2004 till 29.03.2005
Categories	Comedy, Daily Life, High School, Love Polygon, Manga, Parody, Romance, School Life, Shounen, Slapstick
Resources	Allcinema, ANN, Official page

To Love-Ru (To LOVEる)

The story is about Yuuki Rito, a high-school boy who cannot confess to the girl of his dreams, Sairenji Haruna. One day when coming home and sulking in the bath-tub a mysterious, nude girl, appears out of nowhere. Her name is Lala and she comes from the planet Deviluke, where she is the heir to the throne. Her father wants her to return to her home planet so she can marry one of the husband candidates, but she decides that she wants to marry Rito in order to stay on Earth.

Commander Zastin has been ordered to bring Lala back and has already battled Rito. He reports to the emperor that Rito would be suited to marry Lala, after hearing Rito say that marriage is impossible unless it is with the person you love (Rito was actually defending himself, but Zastin and Lala thought he was defending Lala). With this speech, Lala truly falls in love with Rito and decides that she wants to marry Rito. Her father decides that, if Rito is able to protect Lala from her fiances, then he can be her fiance, but if Rito can not do so, Lala's father will kill Rito and destroy Earth.

Main Title	To Love-Ru (To LOVEる)
Type	TV Series, 26 episodes
Year	04.04.2008 till 26.09.2008
Categories	Aliens, Boing, Comedy, Coming of Age, Demons, Ecchi, Harem, Humanoid, Love Polygon, Manga, Romance, School Life, Shounen, Sudden Girlfriend Appearance, Violent Retribution for Accidental Infringement
Resources	Allcinema, ANN, Official page

Seto no Hanayome (瀬戸の花嫁)

Nagasumi visits his grandmother near the sea during the summer. While visiting, he goes for a swim, and drowns right after entering the water. Fortunately for him he is saved by a young mermaid. Later as he tells the story to his family, a young girl named San appears at his home and begs Nagasumi to marry her.

She’s followed by two large thugs and they take both him and his parents to San's home under the sea. If that wasn’t strange enough, it turns out San's parents are mob bosses. Nagasumi is left with the choice of either death or marrying San. He chooses to marry a mermaid.

This would likely be that, except San's father and some members of the mob are not exactly thrilled to have Nagasumi courting San and are determined to bring an end to their relationship - or him. And there is also the matter of keeping it a secret that San is a mermaid.

Main Title	Seto no Hanayome (瀬戸の花嫁)
Type	TV Series, 26 episodes
Year	02.04.2007 till 01.10.2007
Categories	Comedy, Coming of Age, Mafia, Manga, Middle School, Parody, School Life, Shounen, Slapstick, Super Deformed, Underworld, Yakuza
Resources	Allcinema, ANN, Official page