1. High School Lullaby
The popular boy in class & a boy who plays the devil's advocate (has a girlfriend).

2. Shoujo C
I'm nothing special, but Koizumi-kun is a very special guy whose looks and personality are seriously those of an angel. He's our idol. This popular pair was introduced in "High School ☆ Lullaby" (Gesu BL).

3. Requirements for Being Trash
"Gesu BL" Extra Chapter. A first-love killer and a pure-hearted boy.

4. Taisoufuku o Nugasanaide
A boy wearing a facade of a pristine angel, Koizumi-kun, and the class’s disliked Kashihara-kun, and their changed relationship since the day they had sex.

5. Lonesome Neon Tetra
Kashiwabara-kun’s identity begins to crumble from (ill-natured) Koizumi-kun’s sexual harassment. But will he notice? There’s something deeper here at play…

From Tokyopop:

Kentaro and Takeshi are two freshmen who are periodically called upon to transform themselves into monster-battling superheroes, complete with capes and armor... but there's much more than meets the eye...

Shushu is a girl who enrolled in a school for "wolfman candidate," but she has to keep the fact that she's a girl a secret.

Ikehata Shino was raised as a kuniochi, a fearless male ninja who uses sex to get information from men. Since he's a guy Ikehata never thought he'd use his skills, until he met the cool, handsome Andou. But no matter how hard he tries, Ikehata can't seem to get his man...

An all-boys school is good—— Since being recruited into the Student Council by Sawane, we continued our relationship of friends with benefits. Is this taboo? Or is it immoral? Regardless, I don’t care, because I love Sawane. I have Sawane, and asides from me, Sawane doesn’t...... Our distance is far, yet close, so this narrow area here at the school, is perfect for us.

Kaoru declares that he will take off Takara’s legendary jacket, his shirt, pants and his underwear!

N/A

The Academy City on water, "Rikka". This city, otherwise known as 'Asterisk', was famous for being the world's largest stage for the integrated battle entertainment <Star Wars Festival>. The young boys and girls of the <Starpulse Generation> belonging to the six academies made their wishes with Shining Armaments in their hands, vying for supremacy -- Amagiri Ayato is one of them.

Ayato arrived at Rikka at the invitation of the Student Council President of the Seidoukan Academy, Claudia, and right after that he incurred the wrath of the <Petalblaze Witch> Julis, and ended up having to duel her.

The city of Asterisk consists of six schools and all of them participate in an annual battle called the Star Wars Festival. Since the winner of the Star Wars Festival will have their wish granted, students strive to train day and night. Main character Wakamiya Minato, the weakest fighter with a forty-nine consecutive losing streak, continues to fight for a dream.

From Lovely Strange Dark:

A young craftsman meets the daughter of a painter he admired.

Minazu Aruto loves reading novels and short stories so a classmate recommends a club that the school has called Philosophia. The classmate doesn't really know what the club is about but the name sparks a curiosity in Aruto and he decides to find out what it is.

He goes to the old library on campus where he meets and is introduced to all three members of the group: Tomoe, Takaho and Kaede. Still without knowing what the Philosophia club is about, Aruto finds himself joining what he thinks is a literature club.

One day, Nekota-kun, a simple high school boy and encounters a “mythological creature”. Impressed by Nekota-kun's extraordinary vigor, Jun-chan, a simple high school gal, decides to go along with Nekota-kun.

A slapstick comedy about two unbalanced but perfectly matched people!

One day, the Reiwa gal, Gotou, suddenly meets a female knight who has been transported from another world and ends up living together with her. The two of them enjoy the world of Reiwa anyway, such as taking the confused knightess out to Shibuya and working part-time at a café together!

Saotome secretely loves Moe idols even though she is a gal(Japanese term for popular girls). Otonashi is what you would consider Otaku(nerd) that also has a secret.

Mie is a dull high school student who happens to be a professional manga author. He hires an assistant, but the person who came is the number one gal in his class! Despite her looks though, she's extremely good at what she does, and working with her is exciting, stimulating, busy, and fun!!

Takuya Seo is an otaku who likes "anime for girls" and can't say he likes it out loud. One day, he hooks up with two gals from his class, Amane and Ijichi, but it seems that Amane is also an otaku... It's about a school romantic comedy where the otaku meets the gals he like!

My remarried dad brought a new mom and... a cute little sister...!? From the author of “Cross Account”, Date-sensei's long awaited new work! A heart thumping family comedy one shot with 49 pages!!

Home Economics Teacher, Shinji Yabe, is asked by the biggest gyaru in school, Miku Okazaki, to help her "bake cookies to give to the teachers". The principal told her to do this, after she flunked every subject and makeup-class they put her in. He gets her to successfully finish a batch of cookies after several mishaps and is touched by his students glee over her success. He decides to start a cooking club after this experience to get more time and connection with his students. Upon hearing this, Miku decides to join, since he was the first teacher that didn't shove her into makeup-lessons after her failings and pushed her to try harder instead.

From ShoujoLove:

Fifteen-year-old Kuzuhara Tsubomi's family is a hundred years old and counting, and still a prestigious family. Tsubomi is not only the only heir to the Kuzuhara family, but she is also a delinquent kogal who won't listen to her father. For that reason, her father hired her a tutor in order to make her a better heiress.

A gyaru named Serina is reincarnated into the world of an otome game as a background character who is sold off by her family and now works as the exclusive maid of the game's villainess Almelia. Yuri romcom hijinks ensue.