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 Midnight Scans:

“Young Master, please stop teasing me!”
“How am I supposed to do such a thing to you, Master?!”

After my Mom gets into an accident, I had to go in her stead to be a maid in the noble Takaido household. However, it’s not an ordinary maid job, I am assigned to serve a slightly perverted and saucy young master?!

Includes:
Obocchama no Otanoshimi (Young Master's Pleasure)
Obocchama no Otawamure (Young Master's Joke)
Obocchama no Okiniiri (Young Master's Favorite)
Amanogawa Distance (Milky Way Distance)
Hibari Shokudou he Irasshai! (Welcome to the Hibari Dining Hall!)

Collection of short stories:

1. Ikenie no Koiwazurai (Oblation Love)
Suzuki Noriko is this year's Freshman Oblation. For the sake of peace for all freshman, she must be sacrificed! What's more this has been ordained by the most troublesome person in school, Sakikimi!

2. Daisuki na Hito, Sayonara

3. Binetsu Snow
Rui is eagerly awaiting a visit from her cousin Ricchan, unfortunately the girl she was expecting turns out to be a boy! Rui is afraid of men and she's expected to share a house with Ricchan?

4. Dare nimo Ienai

5. Mayonaka no Kichiku Shounen

From Divine Sanctuary:

Lilith is a phantom thief who is after genius artist, Michelle Corradi’s portrait. After she had already stolen some pictures, Michelle had the idea to catch her. When she announces to steal his new artwork he met her and fell in love with her. What will he do to meet her again..?

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?

Kouta's school-year is off to a great start; this year he and lovely Ayano are in the same class—and they're sitting next to each other! Here's the problem: whenever Kouta gets excited he passes out—and wakes up in a stuffed toy. (No, he's not cosplaying—he is the stuffed toy.) It's never the same toy and it always seems to have some sexy girl hugging it close. Then his childhood friend Ako gets involved and Kouta begins to realize Ako is not a child anymore...

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?

For Shim Chung-ah, becoming a teacher is a dream come true. But her joy is short lived! She gets dumped by her boyfriend, meets a pervert on the bus... All these upsetting events just keep making her suffer. After deciding to escape reality by jumping into a video game, the gosu player she ends meeting is actually one of her students?! Without even trying, she find her heart continuously beating. Could this be love?

A collection of short stories. Note that the vast majority of these stories contain heterosexual romance themes. A few stories explore transgender issues, but it's a stretch to call them shounen-ai or BL romances. This series demographic is josei.

Le théâtre de A
1.Oeufs D'ange - Tenshi no Tamago
A man is asked by a young painter to be her model.

2. Velvet Going Underground
A doll becomes a super idol. Hijinks ensue.

3. Childhood's End
Alastair runs away and meets the Rabbit.

4. Bite Me Something
Allistaire followed Mr. Rabbit all the way to Wonderland. Will he be able to find him among the crowd?

5. Long Along Alonging
A girl asks a vampire to be his apprentice. But what is her motive?

6. Till Dawn
In a dark tower, a caged voice is singing until a hunted man enters the darkness.

7. Leçon un
Sequel to Long Along Alonging.

8. My Skin on My Back

9. Highland Walker
Sequel to Leçon un.

10. Perfect World
The story of a young wife whose husband is infected with a fatal disease called Flower-Blossomitis.

11. Perfect Lady
Sequel to Perfect World and drawn especially for this book.

12-13. Looks Like a Teaspoon
A boy named Allistaire is often teased at his all-boys school. One night he dresses like a girl and stumbles upon the boy who often bullies him, Simon. Allistaire runs off into a tower and as Simon runs after him, we see the sign "Welcome to Wonderland" hanging by the tower's door.

14. The Pearl Blue Story
Do you believe in mermaids? Coggy, a young boy finds a mysterious lady laying down near the shore of the beach. He brings her home to help her.

15. I Am a Piano
A piano tells the story of her life and the people she encounters.

16. Parade

Le théâtre de B
1. Noël
A short story about a holiday romance.

2. Teddy Bear Satsujin Jiken (The Teddy Bear Murder Case)
Four murders have taken place at an all girl school. Lying beside each of the victim was a teddy bear with one missing limb.

3. Yonshimai Satsujin Jiken

4. A is for Alice
Alastair, a grown man, is off to follow the Rabbit once again to return to Wonderland.

5. Nedai no Musume Atelier no Musume (The Bedroom Girl, The Sculpture Room Girl)
A story about a girl in her death bed finding another chance in life in the body of a doll.

6. B&W (Black&White)
A story about a boy waiting for his sister.

7. Le Jardin du thé (The Tea Garden)
A mysterious story about a poor young man who orders a kind of tea called Huan Ying – “The Illusion”.

8-9. Free Fitting for Her
A priest and his captured vampire must save a naive and selfish young girl from the murderous desires of a Lolicon. But perhaps this girl isn't all that she seems.

10. Rose Dusk, Pale Moon

11. Hello, My Sister

12. The Happy Prince

13. Welcome to Wonderland
Simon, Alastair's old classmate, is now a grown man who bumps into his childhood Wonderland traveller.

ShoujoHearts:

Kanna is an office lady who is at a critical point in her career. For some reason, she is assigned to receive training from the dull and plain Haruki...?

"Working at a small town plant, scrimping to save for the wedding of her dreams and wanting nothing more than security, Megan definitely wasnt ready for the genie that popped out of her garage sale crock pot, or the trouble his promised three wishes could cause." —Debbie Richardson Manga adaptation of A Man for Megan, a romance novel by Darlene Scalera.

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!

Ayumi and Chika are always together, but as they grow up, time drifts them apart. Only when that happens does a realisation strike someone.

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?

Wait! My heart's beating? Is it because of him!?

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 Seinagi:
Ryouta Asagiri unknowingly wanders into a country of vampires that had just recently become independent from Japan. There he meets a pretty little vampire girl named Shiren Fuyukura, who suddenly questions him and bites him, later to claim that he has become her "Minion". He soon finds out that he is unable to leave this country of vampires (The Sacred Blood Empire) and thus decides to comply to the vampire girl in becoming her "Minion".