From Yuri Project:

Youko has a complex from being compared to her older sister her entire life, so middle school is off to a bad start when the tennis club is trying to recruit "Aiko-senpai's younger sister" and her best friend Maki. She is shocked to find out that Maki is interested in both the club and its leader Keita, whom Youko immediately disliked, and unfamiliar feelings of jealousy soon threaten to cause a rift between them.

Story 1: Himikoi (also included in Rabu Kare - Gokujou Men Dokuhon!)
What if the secret she could never tell was revealed, just before her high school graduation? To be able to face her feelings for Yoshii, whom she has a crush on, the two of them begin a secret game in their secret place. With the last day of school impending, what will be the outcome to her love...?

Story 2: During a Stormy Night
After losing her cellphone, Nao is only hoping that someone nice enough would pick it up, but much to her surprise, the person who finds it is the guy from the video store near her house. Too shy to go and reveal herself, she starts communicating with him solely over the phone.

Story 3: The Glass-bead Bridge
According to the old legend, if you dig out a glass-bead from the famous glass-bead bridge, your love wish will come true. That's exactly what Niina is trying to do during the cold winter time. Every night going to the glass-bead bridge and slowly digging, she eventually gets spotted by her old middle school classmate. Not promising to even meet up once, they still keep seeing each other every night by the glass-bead bridge. Will Niina's wish come true?

Story 4: The Red Turtle's Dream
"I like Sensei." Riku is loving him one-sidedly, but Sensei, who is very self-centered, doesn't even try to accept others. It is only during the short time while she's looking after his pet turtle, Kamekichi, that she feels closer to him, but Sensei's emptiness can't be filled with anything. She wishes for him to find happiness, even though she knows she can never be the one to fulfil it.

Story 5: A Perfect Day for a Picnic
A broken family can only find comfort in a family that went through the same problems. Years pass and people grow old. Some grow into wiser adults, some into young adults, and some into teenagers; teenagers that become interested in love and feelings. Their nervousness and awkwardness can lead to an uncomfortable situation, one that may make them regret what they did. Are love and feelings stronger than family bonds?

Story 6: The Hideout of Those Two
Thanks to her constant bluffing, Chi always spends her days on her own. Her only solace is the secret hideout from her childhood where a kind and protective Nii-chan used to live leaving her with a key and a promise. Will he really come back and when he does, what will change for Chi?

Hoshino is a timid grade school teacher. Sudou was one year his senior in high school. They meet again for the first time in over a decade and discover that Sudou's son is Hoshino's student. The two of them try to figure out how they feel about each other, and try to remember what it was that had brought them together and ultimately drove them apart in high school. They're both different, but that may not matter as much as how they still feel about each other.

From Chibi Manga:

She loved a teacher. But that kind of love is forbidden! Still she kept love him, and didn't care about it.

One day, she met a boy in white clothes in the greenhouse of the school. She saw his kind eyes and she smelled the odor of wood coming from him. For the first time, Tsugumi felt her heart beating for someone.

But after that encounter she understood that this guy was her teacher...!!

From DrCoke at MangaHelpers:

Even after one month of transferring to a new school, Natsuki keeps her distance from her classmates. Her childhood friend Haruka always tries to push her to be more sociable, but Natsuki just pushes her away. One day, while Natsuki was skipping class and eating lunch on the school balcony, a slime-like substance drops right on top of her. The slime slowly forms itself into... a human girl? An odd relationship between Natsuki and her new alien(?) sister Aoi begins.

From JShoujo Scans:

"I absolutely won't fall for this brat!"

Due to job transfers, Makoto has no choice but to stay at the home of her father's friend for the time being. But there lives a boy who makes her boiling mad!? Turns out he's the king of popularity at school, but he's a prankster who likes to mess with Makoto, and even recently dumped one of Makoto's good friends! How is Makoto supposed to handle this obnoxious brat!?

From Midnight Scans:

1. Akuma na Kuchibiru
Hana Yamada, a high school girl, gets sick during a mixer, and is rescued by a very cool male guy, who was casually passing by. However, when he suddenly asks her if she's an elementary student, Hana becomes very angry and kicks him, before running away. The next day, when Hana goes to the nurse's office, she finds none other than the very boy who'd made her angry, Shuuji Kidou...

2. Shoakuma Drops

3. Eien no Hidamari

4. Katekyo

5. Motto Agetai?!

Atogaki (Omake)

from Renta!

Junichi Sasaki joins his school's drama club upon entering high school. However, he soon finds himself dressing up as a girl for his first stage performance.

A collection of stories:

1. Koi to Yokubou no Susume
I'm going out with the school's most popular guy. I don't want to be used and thrown out like the rumor say…?
- Chibi Manga

2. Itazura na Ningyo
The love story between two childhood friends and the magical legend of a mermaid who can grant a wish of unrequited love.

3. Koi wa Beniiro
Beniko, an old fashioned high-school girl is suddenly forced to eat lunch with the new teacher in charge, Nomoto-sensei… (Source: Chibi Manga)

4. Kare no Yubisaki
Moemi has a crush on the new guy at school, and she's not afraid to show it. The problem? His family runs a travelling kabuki troupe—and they're leaving town in ten days' time. Can she win him over before he disappears from her life for good?
- Shoujo-Sense

5. Bishoujo Ouji

When there is darkness in your heart, when you want someone to disappear, he will find you and grant your wishes
Shizuku used to being the best at everything, but when a transfer student comes to steal her spotlight, she is overcome with jealousy. Hal, a death god, offers her a bargain“he'll kill three people for her and by kill, he means he'll make it so they never existed. All she has to do is say the word.
But when Shizuku gives in to temptation, there will be consequences!

From Transient Mirage:
The love-love romantic comedy-- "Osuteki Darling" -- of Kaibara Serika and her two-year-younger boyfriend, Aoki Taiki, makes a powered-up appearance. After dating for two years, Serika has become a college student and Taiki is studying for exams. Even though their circumstances have changed, their love-love hasn't changed. At least, it shouldn't have, but now Serika is being dragged into conversations about having an arranged marriage!?

Kurenai Shinkurou, a 16-year-old dispute mediator, is one day approached by the daughter of a powerful plutocratic family asking him to be her bodyguard.

From Yaoi Is Life:

In Spring of his junior high 2nd year, Saitou got in the same class as Suzuki. Receiving Saitou's help while being bullied in first year, Suzuki smiled shyly while thinking, "what if we became friends". Saitou is becoming more and more conscious about Suzuki and their relationship starts to change?!

Including the continuation of Bokura ni Matsuwaru, etc. (You & Me, etc.), Bokura no Ashita no Houteishiki (The Equation to Our Future), and Sono Te Kara Tsutawaru (I Can Tell by Your Hand).

A romantic comedy involving Souji Shirosaki a student, who is in high school, whose personality can not leave out people in need. And Ichino Moritsuka, 16, a friend in the same class as Souji, who lives alone in an apartment near the mountains. Together, they discover they have strange psychic powers, founding a club game.

Tsubasa gains two brothers after his mother remarries and that is when his "normal" life goes up in smoke.

Hanamoto Mika is a shy, self-conscious 17-year-old-girl who wants very much to love and be loved. Hopelessly superstitious and unhappy with her current self, Mika tries to find answers and guidance to her life through fortune-telling and romance magazines. She decides to go on a group date with her friends and meets Takada. It’s love at first sight; at least on her end. Soon after, she encounters Takada coincidentally on the subway, but Mika trips and falls at his feet, then runs away in mortification before he could say a word. They meet again on a second group date, but to Mika’s humiliation, he has no recollection of her from the first date! But he does remember her embarrassing moment on the train. He apologizes for not remembering her and then explains that he had lost his contacts and couldn’t see clearly on that first date. Emboldened by his confession, she shocks him and herself by asking him out on a date! This is the story of unlikely relationships, and the trials and tribulations that await Mika and Takada - and their friends- in their search for love.

From Bado-Scans:

Smash! is about two childhood friends (Shouta and Miwa) who share a common love for Badminton. Miwa, who's in love with Shouta, tries to persuade Shouta to apply to the same badminton school as her but the latter being of a carefree, easy-going and dense nature, brushes her away and states that he only plays badminton for fun.

However, Shouta's perspective of badminton quickly changes after a fateful encounter with Yuuhi (a mute girl). In his search for his badminton goddess Yuuhi, Shouta met Anan and thereafter, decides that he's going to pursue badminton more seriously...

From AnimeWaves:
Shindou just became a new investigator for Tokki: The Special Mobile Investigation Force. On the day of his graduation, he finally saw the half-naked girl that he had always saw in his dream in real life and finds out that she's part of Tokko: The Special Public Safety Task Force. Shindou ends up joining Tokko to avenge his parents' deaths, whose bodies were ripped into pieces...

In a parallel 21st century Japan, an enemy with incredibly advanced technology attacks mainland Japan from Hokkaido, shattering the Japanese Defense Forces and their American allies. Japanese military scientists use what enemy technology their troops can capture to create their own mecha to fight off the enemy's advance.

But what does this have to do with a boy named Yuu, a mechanical genius with motion sickness, and his separation from his younger sister for over 7 years? Why does she suddenly appear after all that time, dressed as a miko and shadowed by a fox, at the temple where Yuu lives with his uncle? Is she who she says she is?

She reappears in his life just as military secrets and his own secret burden of a psychic power shake up his socially estranged life. And then the war advances...

From The Back Door:

Shiba-kun is Kishitani Shougo-kun's muse. He thought it was mutual love, but Shougo has started acting strange...?