Please☆Teacher!

Kusanagi Kei, a high-school student living with his aunt and uncle, has an encounter with a female alien. This alien is revealed to be a new teacher at his school. Later, he is forced to marry this alien to preserve her secrets. From there, various romantically-inclined problems crop up repeatedly. (Source: Anime News Network)

Otoboku: Maidens are Falling for Me

Mizuho can't believe his ears when Grandpa's will is read out. Grandpa's final wish is for Mizuho to attend the same academy as Mizuho's mother. The catch is it's an all-girls school. With the help of friend Mariya however, he gets a makeover good enough to fool everyone at the academy. (Source: Anime News Network)

Maria†Holic

It’s not easy to find the perfect girl, even when you’re the same sex! Kanako thought attending an all girls school would be the perfect way to meet the girl of her dreams, but after her hot new roommate turns out to be a guy in drag, and catching the eye of the most popular girl in school only brings down the wrath of all the OTHER similarly obsessed girls, she’s not so sure! Complicate things with a cat-eared dorm leader, her roommate’s rude-mannered maid and identical twin sister (who attends an all boys school, of course,) and WAY too many attractive girls of questionable persuasions and the question becomes whether Kanako can die from frustrated nosebleeds! (Life would be SO much easier if guys didn’t literally give her the hives!) Will Kanako ever find a non-polar opposite of a compatible non-opposing polarity? (Source: Sentai Filmworks)

We Without Wings – Under the Innocent Sky

Haneda Takashi has a secret he cannot speak of. To leave his dull school-life, he was supposed to have escaped to another world. However, he is reeled in by certain ties on his heart. One of these is Kobato, his awkward younger sister. The other is Watarai Asuka, his negligent girlfriend. Chitose Shuusuke is a poor freeloader. He passes his days working at various part-time jobs. One day, he has a disastrous first encounter with Tamaizumi Hiyoko. The next time they meet, Shuusuke discovers that they are fellow employees at his part-time job. Narita Hayato sees himself as a "hard-boiled" person. Back-breaking jobs are nothing to him. Hayato shuns normal human contact, but, during the nights, he would get together with delinquents and other denizens of the night. One such night, he meets the cheerful and oblivious Otori Naru. The relationships with these girls will greatly affect these 3 young men. But what, exactly, is the relationship these young men have with each other? (Source: AnimeNFO)

Ouran High School Host Club

Fujioka Haruhi wins a scholarship to attend Ouran Academy, a school reserved for only the most rich and prestigious. Despite what other students may think of her, she cares little for physical appearances or the fact that she is a commoner. Unfortunately for Haruhi, her high school days take a sudden turn when she stumbles upon the Host Club, an elite club filled with super rich and beautiful boys who use their specific traits and charms to entertain young ladies. Even worse, Haruhi accidentally breaks an 8-million yen vase in the club. Since she is unable to repay her debt with money, Haruhi finds herself with no choice but to work for the Host Club, becoming a male host herself.

Asobi Asobase - workshop of fun -

Olivia is a blonde-haired beauty who was born and raised in Japan, but can’t speak any English. Despite always acting serious and as an intellectual, Kasumi is a bespectacled girl with short hair, who also can’t speak English. Finally, there’s the pig-tailed Hanako, who’s cheerful but can’t seem to become a normie. The three middle schoolers end up making a “Players’ Club”?! The ultimately cute, ultimately fun and hilarious teenage girls’ comedy is about to begin! (Source: Crunchyroll)