From Chibi Manga:

Ever since she was young, Chouko has dedicated herself to kendo. Upon entering high school she naturally applies to join the Kendo Cub however, after not being taken seriously, events take an unexpected turn when she stumbles into a boy called Takanashi.

Not to be mistaken with Itazura na Kiss. From Be With You Scans: A girl takes a pencil left out by the sempai who she has a crush on, but she was unknowingly being watched by another boy while taking it. In order to keep her secret, he demands... that... she... kiss... him!

What do you spend the time left of your life when it's measured in heartbeats? This is the story of Hato Iijima and Hatsu Takagi, connected to each other by a rare disease called "Tempocardy".

From Aerandria Scans:
A collection of oneshots.

1. Kandagawa Rhapsody
The bathroom at home is broken, so I'm going to the public bath-house. But what I kind of look forward to is that boy that I meet after getting out of the bath. Will I get to meet him again tomorrow? After knowing for sure that this is "love," I will say it to him.

2. Dance of Glittering Stars

3. Santa's Kiss

4. Orange Road

From Storm in Heaven:

Toda Yuji and Kojima Isagi used to be close friends when they were little, but they drifted apart with the years. Yuji's your typical model student, while Isagi is a problem child. Even though they're almost like strangers now, Yuji keeps dreaming about a traumatic experience he had long ago, where he was saved by Isagi. After a chance encounter at school, they start hanging out with each other again. But one night they both get into serious trouble.

So you're a high-school student and love your teacher. Why? Well, big boobs, nice ass, etc. However, your “sister” loves you. Almost seems like a story with no end. Problems arise as expected and such, but what if your teacher that you love and your sister’s soul interchanged and switched bodies. Which one will you love now?

1-3) Inu Jikan
Riku is a girl who would choose dogs over a boyfriend and food. And it just so happens that the most popular boy in school not only has the word "dog" in his name but owns three large dogs too! Will love bloom?

4) Amakuchi Kigokoro

5) Himitsu no Chikara

From Osuwari Team:

"In our classroom, everyone has worries behind their smiles. Parents divorcing, complexes, kissing… The main characters in these stories are living with pain or anxiety, but they are still shining brilliantly."

Continuing the story of Shuuji Yukimura, the formidable student council vice-president, and the problematic childhood friend, Ryuuichi Shinonome (Towa's friend).List of Warui Series:Vol 1 Warui Koto Shitai [1-1]Vol 2 Waruiko Demo Ii? [1-2]Vol 3 Kirai ja nai Kedo [2-1]Vol 4 Koi Ja nai Kedo [2-2]--- Warui Koto Bakkashite Gomennasai [1-3 & 2-3]Vol 5 Warui Yatsu Demo Ii [1-4]Vol 6 Mujihi na Otoko [3-1]Vol 7 Warui Koibito ja Dame? [1-5]Vol 8 Kare ja nai kedo [2-4]--- Warui ko Tachi no Bansan [1-6 & 2-5]Vol 9 Mujihi na Anata [3-2]Vol 10 Sunao ja nai Kedo [2-6]Vol 11 Warui Ouji Demo Suki [1-7]Vol 12 Mujihi na Karada [3-3]Vol 13 Shouwaru Ookami ga Koi wo Shita RashiiVol 14 Himitsu ja nai kedo [2-7]Prequel:>Sunao ja nai kedo( http://mangapark.me/search?q=sunao-ja-nai-kedo )

From Echochi:

Blockheads Kasukabe and Misato are always quarreling over everything. But one day, Kasukabe finds himself helping Misato to escape from a bunch of fangirls. Alone in the classroom. Kasukabe starts taunting and teasing his arch enemy. But somehow, things start taking a turn towards a completely unexpected direction…

From Storm in Heaven:

Tamiya, a student whose honesty tends to be so blunt that it gets him in trouble, has fallen in love with Shirasaka, a teacher from his school. He's an excellent teacher, very caring and popular among students, but because of his dark past, there seems no hope for Tamiya to win over his heart. In the past, Shirasaka had a relationship with Iogi, his senior on the track team, and they were both in an accident which was Shirasaka's fault. Iogi became seriously injured and was forced to give up his athletic dreams. Since then Iogi has used Shirasaka's guilt to keep him close. Is there any chance for Shirasaka and Tamiya to be together?

Keigo Satou has a crush on his classmate/friend, Arai, who is always cheerful. He tries to make her fall in love with him even though she doesn't notice him.

Welcome to the anti-underwear naked club. You're invited to join Hanako Tanaka in her quest to rid the world of underwear. Her cohorts are Akiko Yamada (A cup), and Mariko Watanabe (F-cup). Together with Hanako's male childhood friend (much to his chagrin) they strive to make a world free of undergarments....Or so they try.

A boy falls in love at first sight, but the girl rejects him because he smokes? What will happen? Brilliant usage of modern media for antismoking campaign. Park Tae Joon from Lookism makes an appearance.

A disturbing manga inspired by an even more disturbing movie of the same name (aka Suicide Club). As you might expect, they both deal with the theme of suicide. However, the plots of the manga and movie are significantly different, so don't worry about spoilers and such. Finally, I'd just like to point out that the manga isn't for the faint of heart, and the movie even more so.

Kibayashi Rento is a 'personification' of a supernatural being descended from a family of Ents (tree-oak people). One day his arm got torn off trying to save a cat from a tree. While he's looking for the arm, he crosses a girl, Kurashina Saya, who finds his lost arm. Saya is Rento's crush, and actually a fellow 'personification' descended from a family of Ghouls, whose main characteristic is appetite for humanoid meat. Can romance blossom between the two supernatural beings? Slight discomfort advised. Don't worry though because he's a plant, so he can regenerate his lost body parts easily, including that aforementioned arm.

From Chibi Manga:

Honami has a thing for glasses boy on a usual day in the class, comes a super cool glasses wearing boy!?

Werewolves, vampires, dragons, and all sorts of other mythological beings are real, and they live hidden among us. But in order to stay hidden, they need special doctors who can treat them without having to worry about their true natures being revealed. Toketsu Tatsumaki is one such doctor, a young yet brilliant human boy who has genetically altered his own body to better be of service to the supernatural community.Winner of Weekly Shonen Jump's 2015 Golden Future Cup.