A guy likes a girl in his class so he confesses to her, only to find out that she has vines growing on her body. What is this mysterious affliction, and how does it affect their love for each other?

From Wildflower Scans:

When her father is laid off and the family is facing tough times, middle-schooler Kousaka Yayoi selflessly offers to give up her dreams of being a high school student to contribute to the household. Fast forward to a few years later, where Yayoi is about to be given a full-time position at her office job—the only problem is that it requires a high school education! What awaits the 21-year-old high schooler at Hoshinomiya Academy?

Mom's warmness. The sunset I watched with my friends. The summer we played in the pond. That day I left everything and abandoned town.

A traditional girl with a grandma's mindset, Kijima Rio wants to avoid getting involved with the "ill-mannered youngsters" at all cost. As fate would have it, she must work with a "youngster". And the fun begins...

From JShoujo Scans:

Kyoko's a recent graduate who just began teaching at a local high school. Being a new teacher, she spends her days battling with the ups and downs that comes with the job. But one day, she notices that a student of hers, Sakurai, has been paying her a little too much attention, and when they wind up being in the same room after school....

also include:
1) Secret cocoon
about a girl who starts to like her deceased boyfriend's brother
2) A caress
about a girl who is in relationship with a married man and a father (love affair).

From Aerandria Scans:

My mama is in heaven, but… I have my sister!
Hinako is a high school student who has a lot of things that she wants to do, but for her cute little sister, she will become a mother!

From Aerandria Scans:

Story 1: Sweet Tear is the Flavor of Love
After a painful experience in love, Tani Rika started to have a cynical view of love. She falls in love easily, confesses her love easily, but the moment the guy tells her that he loves her, she dumps him. This time, her new target is Tanabe-sensei, a teacher at the cram school she’s going to. Making him fall for her is just another game to Rika - or so she thought, but she started to develop feelings that she thought she had forgotten a long time ago...

Story 2: Altair's Love Letter
Sueo, a countryside girl, becomes friends with Tsutsui-kun, the lonely city boy. After that, every summer he goes to see her, without fail. Suddenly, he doesn't show up, for three years! She sends him letters, but he doesn't reply. What's going on?!

Story 3: The Boy from the Sleeping Country
Matsuri, who has been single her whole life, is on her way home from school, when she falls down with her bicycle. She's 'helped' by a mysterious boy, who's at that place everyday... He says he's there everyday because he loves that place, but... is it really the only reason?

From Intercross:
For Yui, she has no "freedom" whatsoever. Every single day, she's always been ordered around by her childhood friend, Aya, and her little sister, Chika, and she can't help but to obey them. Though, one day, she receives a love letter from a classmate! For some reason...Aya seems very annoyed by this.

Financial conglomerate Asahi, which is worth 8 trillion yen, has Hinaka as the only daughter of the head of the family, who is on the verge of death. Hinaka keeps fighting off all the looming assassins, but what will happen when she's confronted with the "strongest professional hitman," Kyouma?

From Evil Flowers:

Lisa is deeply in love with her senpai. She became a coach at her school's archery club hoping she'd get a chance to get close to the senpai she loves. One morning Lisa visits a small shrine and prays for her dream to come true... not knowing the fact that she should be careful what she wishes for...

B Grade Sexy Idol's Loser Member, Ha-young and her very noticeable helpers "Ha-youngs flower path Project" Starts now!

Kaoru Sakurai, the successor of the Sakurai Japanese Dance, made a promise with her childhood friend, Shihou Takaaki, to remain together forever. However, Takaaki left to study in England. Separated for 10 years, Takaaki returns to Japan to become Kaoru's tutor. Yet, Takaaki's uptight and cool demeanor is nothing like the childhood friend Kaoru remembers. How will their relationship progress?

From Antebellum Scanlations:

At the start of high school, Takae fell in love with Araki. However, Araki just happens to be indifferent to love. Against her better judgement, she begins dating someone else, but that relationship turned out to be a big mistake...What will become of Takae's love!?

From JShoujo Scans
Includes an extra story:
"Yori-chan has a Love That'll Never be Requited"
(Sequel to "Like Snow Falling on Harbor" from A Rose-Colored Tomorrow)

It's been over five years since Yori watched the car that his best friend and Kurita, the girl he was in love with, were riding crash into another car, leaving Kurita in a coma that she hasn't come out of since. His best friend, who had also been in love with Kurita then, has already moved on and found himself a new girlfriend.

For Yori though, time stopped that horrific day many years ago. Can his distant cousin, a spunky teenage girl who harbors a huge crush towards him, make him realize that it's time to let go?

Based on presentation from Chibi Manga:

Masumi is in love on with her childhood friend since a long time ago. But because of her pride, she can’t show him her true face...

It's about a playboy who one day found a baby... And apparently, he's the father.

From the Japanese Back Cover:

Now, open the door to the corruption and welcome a story of sensuality...
The life of Ako, a quiet 16-year-old schoolgirl, is suddenly covered in blood when a fair compelxion vampire, Koh, appears and bites her. While her blood is sucked she feel an undescriptable pleasure in all her body. "Come and hunt with me" were Koh's words when he finish to bites Ako. A vampire story of sensuality from the hand of Natsume Kokoro-sensei is finally here!

From Digital Manga Publishing:

Ako stumbles into her parents'' murder scene while the killer still lingers over them - a vampire named KOH! He turns his attack on her and viciously drains her life, but even as she dies, her terror and revulsion turn to... pleasure? Now, Ako has joined the ranks of the undead, feasting upon humans at her master''s command, but what will become of her only living brother? The poor boy still awaits his sister''s return, never knowing that another vampire hunts him from the shadows.

From Ivyscan:
Consists of 4 short stories.

1. Orange Kiss
Kijima Aka had a dream. In the dream, she and an orange haired boy kissed under the setting sun. And that boy just so happens to be the guy who's in the same class as her, Shimizu! She always thought Shimizu had some kind of grudge against her because he seems to hate her. Will Aka's dream become reality?

2. Happy Words
The story of the past of the main characters, Saiko and Ichi, from "No. 1 Girl" in the tankubon Caramel Milk Tea.

3. Last Train Under the Night Sky

4. More Orange Kiss

Includes "Another Usami's Biography."

From Go!Comi:
Taki thought he knew exactly what he was getting into when he accepted a job at the church as an assistant -- but the job description never mentioned dealing with zombies! When night falls, the mysterious priest Shikimi and his new assistant venture into the graveyard to destroy the freshly risen dead. The enigmatic priest always seems to know when and where these creatures will appear, and as the days go by, Taki begins to suspect that the danger may also come from within...

From Chibi Manga:

Her parents decided to go overseas and she's to live in the house of her father’s friend. "In that luxury mansion, there are beautiful boys!" she thought for a brief moment. But these two brothers are trying to get her out of the house and things happen to be taken a little too far...!?