4-koma on Class 4-2's Sadomi the sadist and friends! Elementary school JUST like you remember it!

Chapter 1-4+extra) Rush!
After winning a match with Shinonome, the strongest guy in school, Shinonome pursues Kanai romantically for some reason. At first Kanai is confused, but being touched by Shinonome's purity, his feelings gradually begin to sway... He even dreams of being with Shinonome! What could this mean!?

Chapter 5-7) Spin-off story of Usotsuki wa Dareda

From StarryHeaven:
A short shoujo story about a girl who wants to continue the family tradition of her family…that is, get married at 16 and have a girl child at 17! A very crazy story about a very crazy girl named Ren who falls in love with one of the most popular boys in school, Juuya, at first sight!

From ClubManga:

Kayama Miharu enters her new middle school and immediately becomes friends with Mori Mizutama, a very cute guy she first takes to be a girl but is really a boy. However, though Miharu likes Mizutama, she cannot tell him, especially ever since the older Kawagoe (yes, a boy) seems to have taken Mizutama's interest instead. Miharu tries to be cute for Mizutama, but finds it practically impossible, as he is both more talented at home economics and more cute than herself. Then, Mizutama joins the Kawagoe's soccer club instead of the comedy-lovers' club the two of them had decided on earlier...

Also contains the story Fuyu Hanabi

[From AT-Translations]:

Based on an ero-game, Prism Palette is Peach-Pit’s (famous for DearS, Zombie Loan, Rozen Maiden and assorted other manga) first publication. It follows the main character, Masaki Shirai, as he spends his days at school, surrounded by beautiful girls.

The guy who's always been by my side... the distance between us changes...

From Chibi Manga:

Uta thought that her homeroom teacher was a geek, but she saw him when he was dressed differently. Sensei was actually a handsome rock-n-roll singer!? Since Uta had always wanted to have a boyfriend, she threatened him to "go out with her" and she wouldn't tell anyone his secret! but she ends up really falling in love with her teacher..!?

Contains:

• Natsu wa Ginga no Ame ga Furu
Summer Holidays. She didn't want to visit her grandmother, who she is on bad terms with, so she spends O-bon festival alone like she wanted. (Only for watching the house though!) And the person who appears in front of Akari is...!?

The Hanzo Academy is not just a regular school. It holds a top secret class for ninja training reserved just for the elite. Only two girls made the cut this year, Ikaruga, a quiet but gifted brunette, and Katsuragi, a passionate and skilled blonde. Their personalities could not be more polar opposite and sparks fly even on the first day of class. Ikaruga, being a little bit ahead of the curve, outscores Katsuragi on every assignment. With tensions running high, how will these two ninja students work together when the time comes?

When boys put their hands in their pockets, it means they're hiding their feelings!" Chiharu has a boyfriend that is very, VERY quiet. At first, she didn't mind at all that he rarely spoke because she believed that she was fine as long as their feelings could be conveyed. Soon, though, she comes to realize certain things that makes her feel extremely anxious towards him... Why does he always keep his hands in his pocket?

From Bluebird Scans:
The gyaru, Hana doesn't like the person that sits in front of her, Nioka and Nioka also hates gyarus?!

From JShoujo Scans:

1. Seishun Walker
Being a tomboy who loves to get into fights, Ouka's had zero-luck in the love department. The motto she lives by leans more towards "Be Yourself" than "Be Ladylike," and she follows that to a T. But lately, her long time friend Mashima's been on her case about how she should act "more like a girl"...

2. Appare!
Oumi Koutaro is a new high school teacher who just finished university. The students fell for him right away. All but Yonehara who already has a boyfriend.

3. Red-Green
Suzumoto Kureka broke up with her boyfriend. All left from their relationship is a red bicycle that they bought together. Even though she can't ride it, she takes it to school everyday, because she can't let go of her feelings. But one day the bike got sealed together with a green one. What does the owner of the green bike want from her?

1) Youth Survival
Summer camping trips are supposed to be filled with joy and laughter, but why is Kiriko so unlucky~~? At first it was that weakling four eyes, Kazuo and cutesy Hana-chan destroying the pork soup, but then they never came back after asking them to go pick up some wild herbs! Oh, fine! So she and Satoru went up the mountains to get them, but who knew they’d get lost too?!

2) Liar Love Letters
When Ritsu's boyfriend asks to break up, she complies - only to find that he's angry about it. To make her pay for dumping him so easily, he puts on a bet. Trick Ritsu into falling in love, and win a good amount of money. When she overhears this, Ritsu is determined to shoot down all the boys out to trick her. But what happens when she comes across someone whose lies capture her heart?

3) Sword and Heart: Dangerous Relationship
When you add the Japanese kanji character for heart underneath the character for sword, sword becomes the character for shinobi. Shizuru, when younger, had a crush on her very brave and handsome ninja senpai, and still likes him to this day. Things in her life get a little complicated when other ninjas decide to steal something valuable that her family is taking care of.

4) Never Dying Crow…!
Otokomae! Beads Club side story

About a sixteen year old girl who graduated in Australia and returns to Japan to teach English in a high school. The students are of the same age and so she has a lot of difficulties getting accepted by them.

1-4. Seinen 14-sai / Seinen 14.5-sai / Seinen 15-sai / Seinen 18-sai
Itou just found out that one of his best friends, Machida, maybe kind-of sort-of likes him. He doesn't say it, but he did orgasm when thinking of Itou even as he was about to have sex with his girlfriend! Now, Machida has a complex about Itou and even kisses him, and Itou develops a complex about Machida because his first kiss was taken! On the edge of becoming men, will they figure out their feelings?

5. Neko ni Naritai
The son of an apartment manager falls for a tenant who keeps several cats.

6. Kakedasu Otoko
Two longtime friends sleep together and navigate the awkward fallout.

7-8. Hana to Ojisan / Boku no Ojisan
An author mourns the eigth anniversary of his wife's death, and comes to see his younger cousin in a romantic light.

9-10. Kanashii kara Janai
A sad child wanders into a tobacco shop, where a sassy shop owner gives him a cigarette. The boy and the shop owner become friends, and she helps him learn to make friends (including her grandson).

11. Seinen ?-sai / Extra

Nikumaru, meaning "meatball" in Japanese, is a seventeen-year-old student at Ninja High School, a special school for the training of ninja. He is short and chubby, but he possesses a super technique known as the "kamikaze", where he stirs up a whirlwind with his feet. The series introduces his many adventures and pranks as Nikumaru meets with his rivals both in and out of school.

Sasameki Koto is the story of Murasame Sumika, an intelligent and athletically gifted girl who just happens to be in love with her best friend, Kazama Ushio. Unable to confess her feelings, Sumika can only stay by her side and watch over her. After all, the biggest obstacle to her love is something that she can't change. It has nothing to do with the fact they're both girls; Sumika just isn't Kazama's type!

Kazama is only into cute girls and Sumika's cool personality just doesn't fit the bill. Much to her friend's dismay, Kazama is always eager to share news about her latest crush. With the duo's knack for attracting trouble, it looks like Sumika's trials have only just begun.

From Karma Falls Scanslations:

Shinigami Ai is bored with his job and to seek enjoyment he has an interest in high-school girl Ren who only has days left to live. She is the student council president at her school and really a good-hearted girl, but she is feared by the whole school because of her harsh way of speaking. Ai possesses her body and exposes her kind, true nature and so enjoys his "Sarashi Asobi (Exposing Game)". But gradually he is starting to feel an interest in being with Ren...

Includes the one-shot "Lunch".

From Lovers Dream:

All too aware of being "just a teenager," Chiho is willing to do what it takes to confess her love to Somei-sensei, her teacher and the guy of her dreams. Still haunted by nightmares of a confession gone wrong years ago, she hopes for some high school romance... but wait, the nightmare himself is back, and he's going to her high school?! Things just got a whole lot more complicated for Chiho...

*Includes two side stories in volume 2:

• Suki Nanda Baka Yarou
• Unmei Nante Sonna Mono

1. Sensei to, Uwakichuu
Hana is in extreme shock over the fact that her boyfriend cheated on her. When confiding in the Kudou Sensei from the school infirmary, he plays with her hair… Are you trying to comfort me? When she was trying to leave, he asks an impossible proposition "Would you like to have an affair with me?"!?

Hana who became limp from those words was asked "Are you anemic?" I’m not! He says we should just have an affair to kill time, but Hana doesn’t understand him!!
- Chibi Manga

2. Ouji na Geboku no Aishikata
Juri has always admired Makoto-senpai as a 'cool beauty'. One day, she accidentally overhears senpai's girlfriend breaking up with him which then she realizes, senpai is actually an M?! Even though shes caught by Makoto-senpai, Juri is so heartbroken over her now shattered image of senpai, Juri slaps him then runs away. But the next day, senpai...?!
- Intercross

3. Shitsuren, nochi Bon'nou
Ume's boyfriend suddenly breaks up with her and in an atempt to forget him Ume wants to become a monk. But at the temple that somehow ends up being the home of her ex she meets her ex's little brother Kojiro ...

4. Tenshi ni Kiotsukero!
When Mana introduces her new boyfriend to her childhood friend, Shion, he changes from the sweet angel she's always known into a little devil!?
- Intercross

5. Chokotto Mirai de Machiawase

6. Sensei to, Uwakichuu ~Extra~

Mizutani Minato, a high school girl, has not fit in at her new school ever since she started attending a different school from her middle school friends. Her shy personality has kept her from making friends and engaging with her classmates. Through an unexpected turn of events, she joins the astronomy club in school, consisting of three students considered to be the weirdest and seen as outcasts in the entire campus. The club consists of Aida Souji, the smartest student in the entire freshman class, Kousaka Ranko, the second most brilliant and ridiculously strong, and Takigawa Youichi. They all have dreams of becoming members of NASA and studying the fascinating universe. The four kids of the astronomy club rename themselves “Soramiyo” a name made by taking the first letter from each of the members' name. Minato slowly learns through the Soramiyo club how to become confident in who she really is and the importance of having great friends.