From Cave Scanlations:

Welcome to Harmonia Music Academy, a top-class, world-renowned institution of higher learning for musically gifted students and future defenders of mankind. Yes, that’s right – heroes called “Scratch” to defend humanity. We meet our three unlikely heroes, Shuon Tempermento, Calma Perdentosi and Energico Apassio as they completely and utterly fail a critical Scratch placement exam without scoring so much as a single point. “The Problematic Trio”, as they have come to be known, will have to pull together to resolve Shoun’s brother’s mysterious disappearance, the threat of impending war and cope with their own personal turmoil, all while their school careers are on the line. What will happen to them from now on?

"A classmate suddenly became my 'older brother'...?"
High-school student Shinozaki Aya can't help but take care of others. The only one to relieve her burden is her classmate and close friend Haruki. But what will happen when they learn about their parents' remarriage to one another? Will they really be able to become siblings?

A collection of oneshots:

1. Koi ni Ochite Kudasai (Please Fall in Love)

2. Sensei to Sono Ato no Hanashi (Sensei and the After Story)

3. Koyoi, Neko wo Sagashi ni (Tonight, Looking for the Cat)

4. Karamaru Kokoro (Entwined Heart)
Ritsu wonders If the only thing his boyfriend likes about him is his hair.

- Echochi Scans

5. Omotte mo, Kanawanai (Even Thinking, It Won't Come True)

6. Koi ga Saita Hi (The Day Love Blossomed)
Lumiére's just moved in with his owner and wonders why Lluvia, the cat next door, won't have anything to do with him. Will Lluvia ever come around? A gentle tale of becoming friends, and perhaps something more.

- Echochi Scans

A collection of warm-hearted short stories about life and its little wonders, interconnected via a certain school and the students and teachers that pass through its halls. Sweet and delicate, they're like "flower cookies" for the stressful mind.

A story about two friends at a Halloween festival.

The story of Satou-kun, a vampire who has been living a normal high school life and Tanaka-san, his classmate, who goes to all lengths to investigate his behaviors. As it turns out, Tanaka is the grandchild of Satou's past love!

Chapter 0 was part of Arcana 04: Vampire

[From AnimeWaves]: Two kids, Kouhei and Akio, made up an imaginary girl named Hajime to take the blame for destruction of the principal's copper statue. But one day, they meet a girl that is exactly like their description of Hajime, but only they can see her.

Sasakura Kyouya is your typical average high school boy (what else would he be? a ninja?) who is no longer ordinary after meeting a girl shinigami one day, who her purpose is to protect him. How will Kyouya survive this aloof shinigami? What kind nud- *cough* i mean "Plot" awaits him?That is only for Kyouya to find out!

From Viz:

What if scientists discovered that mythical creatures like mermaids, dragons and werewolves actually did exist? Better yet, what if any kid could train them to compete in the ultimate role-playing game? Welcome to the world of Legendz, where master trainer Ken Kazaki and his loyal Windragon are about to turn fantasy into reality!

Chiba Osamu and Arikawa Madoka are in the same middle school class and in the same swimming school on Mondays, Wednesdays, and Fridays. Although they have many opportunities to talk to each other, they never have for years now. They barely acknowledge each other, even though they have met hundreds of times. But when Osamu learns that Madoka is going to quit swimming school when she starts high school, something emotional starts to grow inside of Osamu. First, it began with nothing more than curiosity, but soon it blossomed into something more real. He has to tell Madoka what he is feeling before he never sees her again.

When the clock strikes midnight, the door opens. This is when the phantom awakens, wandering, looking for the most beautiful dancer.
Loosely based on "The Phantom of the Opera."

One day, a girl wakes up and she's suddenly become a high school girl! What's she to do but live life to the fullest - wear loose socks, 90's fashion, make fashionable friends, and maybe even meet a rocker? We're happy to bring you a new series, this thoroughly josei series by the little-known (in the scanlation world) Urino Kiko. The art and fashion is meant to be from the 90s, but the story will be entertaining to modern readers.(This is volume three of Urino Kiko's Story Anthology but completely unrelated to volumes one and two.)

From Within Silence Scans: Mia was just an average girl.. thinking that she has lived a normal life. That all changes one day when she meets a strange child with yellow hair, yellow eyes, and cat ears. Hearing the name "Laika," she wonders at the strange name and brings the child home. Will she ever regain the dark memories that she had lost?

Shizuku has a unrequited love for Ichinomiya-sensei. But since Ichinomiya-sensei is her sister’s boyfriend, it’s a love that definitely won’t come true... She's trying hard to quickly find a new love, and she's been rushing to search for her soul mate within 10 years! When she went out searching for that fated person, she had a horrible meeting with Hatori from the tennis club.

From StarryHeaven:

Hasato, finds love at first sight with the model “Peach.” She has entered the high school he attends just before the applications shut. But what is the truth about this “Peach” that she has met there…?!

N/A

A gruesomely tragic, bittersweet story of a pair of orphan girls...

Hiiro, the sexy beauty, and cool technician named Shizuka, begin a physical love! Now they're the school's biggest (problematic) couple, making love when and where they please, even reaching the point of public training! The relationship keeps escalating. Where will it go?!

1. Kyoyou Hani (Range of Tolerance)
After Shizuka sees Hiiro enter a hotel with another older man, he suspects that Hiiro is cheating. So he sets out to show to Hiiro just how forcefully loving he can be!

2. Kairaku Hani (Range of Pleasure)

3. Genkai Hani (Range of Boundaries)

4. Kyokugen Hani (Range of Limitations)

5. Rinkai Hani (Range of Criticality)

6. Shubi Hani (Range of Defense)

Collection of three short stories: • Lip Cream • Nagareboshi Iri Chocolate Cake (Chocolate Cake Made with Shooting Stars) - Machida Yuuki asks her close friend Hiro to help her bake a chocolate cake for her crush, because even though Hiro is a guy he is an incredible pastry chef! But who is Hiro's Valentine's Day crush...? - ShoujoMagic • Pocket Bell