From Wasuretai:

For her birthday present, she wishes she could be an ordinary girl. She commutes to Rose Academy in Usuyami Town. She is Little, a beautiful 114-year-old vampire. Her brother Radou watches her, there's a werewolf servant Inukai, and the magical boy Shinji. The ghost that threatens Little's school life has appeared.

Adapted from the otome game: Princess Nightmare

Kume Short centers on a short-haired girl named Nikaidou Tomoko.

Yuri is just a normal girl in high school: she loves hanging out with her friends, she has dreams, and she has worries. But one day, she wakes up in a strange forest she's never seen before beside a man named Chihiro. As the two of them learn more about the place they suddenly find themselves in, and the oddly real dream they had of being abducted by aliens, the dark secret of where they are and what has happened to them will begin to unfold.

From Esthétique:

Hanaka has never stayed at any particular place for too long because of her grandma's crystal ball. After hearing the news that they'll be packing their bags again, she cried herself to sleep. During the night, she heard a sweet harmony and dreamed of sleeping in a flower bed. The next day, as she was on her way to say goodbye to her friend, a trio appeared and identified her as "Princess Hanaka." They demanded the Laga Star, which she had no clue about. At the same time, a guy with silver hair and aquamarine eyes appeared confessing his love for her.

Gang fights and Yakuza dabblings. Sophomores versus seniors. Blood, rape and power. Mayhem rules Kishuu Private High School when the sophomore Nagato transfers into the all-boys school. Being battle-tested and oblivious to the hierarchy, the newcomer soon piques the senior leader's interest. When Nagato is suddenly confronted and defeated by the latter's lap dog, Ai, he vows to get back at his foe. Little does he know that Ai harbours a dark past behind his beautiful poker face...

Includes also "Ai wa Deban wo Matte Iru"

There are some days when it'd be better to just stay in bed... so says Kazuma, an apprentice demon-hunter, on the day when he finds a strange creature in the forest. It's not a bloodthirsty monster, but a young half-human, half-dog girl. Just what type of creature is she? And why does Kazuma sees her at his school right after escaping from the encounter?

N/A

A princess requests a witch to make a love potion.

Cool, smart, athletic Hoshino Toma enjoys being the school prince, but she's all-girl at heart. She has to decide which is more important--her image, or the boy she likes.

Based on the game of the same name, a variety of artists and authors collaborate together to make a series of 4-koma comics making jokes, poking fun at the flaws in the game, telling stories and other hijinks as they go all out in these gag filled volumes.

Story 1: Renai Joujou
Tsubasa, a normal teenage girl, promises to her dying grandfather that she'd fufill his last wish. However, it turns out that she must marry the heir of a tea ceremony school due to her grandfather's promise? What?! But, there are two heirs, so she must decide who to marry, or if to just run away from her problem.

Story 2: Ouji Sama no Himitsu (The Prince's Secret)
Yukasato happens to witness her school's prince, Matsunaga-senpai, rejecting a confession from a girl, and then freaking out by himself afterwards. Yukasato offers to be his girlfriend to help 'rehabilitate' him of his fear of girls...

Story 3: Rabu✩STAR (Love✩Star)
Ito and Kaho are childhood friends, Ito being the tyrant who bosses Kaho around, and Kaho complying (mostly because his mom asked her to). Ito is a star, but Kaho doesn't see him that way until he drags her along to a photo shoot of his...

Story 4: Chuttoshite Purisu (Kiss Me - Please!!)
Hinata and Jun have been dating for three months, but haven't kissed yet... Hinata discovers that Jun faints whenever he gets close to kiss Hinata!

From Shoujo Crusade:

It has been many years since the Taisho era. The daily private lesson life of a merchant's daughter, Aoi and a fallen noble, Reiichirou unfolds...!?

---
Story from the cover of the manga:
Many years have already passed since the Taisho era began. Sonomiya Reiichirou who is a fallen noble turned tutor, and Maruya Aoi, the daughter of a newly rich dumpling seller, start this wonderful Taisho romantic love story. Reiichirou gives Aoi-sama strict and attentive lessons to help her become familiar with being amongst the rich and the powerful! However, when night falls, the lessons quickly change to private lessons!?

A special chapter was published in the 13th issue of Hana to Yume in 2011.

From Horobi no Michi:

Kirisaki Fumio's just a highschool girl in love...

...but then she finds out that the guy she's fallen for happens to love someone else.

...so she decides to go out and get a chainsaw.

And take it to school.

And then many things happen.

In the Renai Chuudokuteki Senjutsushi series: 1. Senjutsushi wa Kujikenai - Renai Chuudokuteki Senjutsushi 2. Senjutsushi wa Koi ni Oboreru 3. Senjutsushi wa Netsuai Sareru 4. Senjutsushi to Majin no Shiro 5. Senjutsushi to Fukushuu no Koto 6. Senjutsushi to Saiyaku no Tsubo (1) 7. Senjutsushi to Saiyaku no Tsubo (2) In a certain time, in a certain land, there was a beautiful magician with long, trailing silver hair. His name was Liu Li Xian, a man whose beauty was so great and his magic so powerful, others believed him to be not of this world. However! He had a certain "illness." Which was that he really, really, REALLY liked pretty men. He found them IRRESISTIBLE! Liu Li Xian's grand adventure in seeking out prospective lovers begins!

N/A

Tokiwa Kanenari likes to masquerade as a substitute science teacher, but he's actually in the business of dealing with the spirit world. And there are spirits in all sorts of things around him, from amber necklaces to unfinished paintings and even abandoned satellites.

The manga inspired TV drama series broadcasted in 1991.

by Nornir
Gray Town – where all the buildings are gray, except for one single house, built who knows when - the Red House.

A collection of one-shots:

ch1) Kuchibiru Mellow (formerly known as Bisque Doll Replica)

ch2) Hachimitsu Neko

ch3-4) Mishitsu Funny Romance

ch5) Ningyo no Iru Keshiki
A guy falls in love with an aquarium diver at first sight, and he does his best to court him.

'Once noticed, it was...'

From the 1st year of middle school to the 2nd year of high school, Makihara Kai and Mizushiro Ren have been in the same class. But in the last year of their high school lives they are placed into different classes. A small ripple is born in the unchanging days that pass by... that makes the feelings they were unaware of start to bloom. Wanting to tell him, but unable to say it. The answer deep, deep within their hearts is...

The path of youth and high school boys unable to voice their love.