Tamaki's family owns a pet shop specialized in reptiles and amphibians, though he himself doesn't particularly like them. He catches the interest of a girl named Saya, who really likes reptiles and amphibians.

From September Scanlations:

Miyano is a high school student with a secret–he’s a BL fanboy. He’s passionate about his hobby but doesn’t share it with others easily, until a chance encounter with a quirky sempai named Sasaki brings a new friendship. Sasaki doesn’t know what the heck a ‘seme’ or ‘uke’ is, or why he should be worried when Miyano threatens to draw doujinshi involving him, but he’s eager to learn about his cute new friend’s hobby!

One day, Karin-chan decided to join the manga club for the mysterious reason of wanting to 'defeat her breasts'. And apparently, she's also aiming to become the world's number one street performer...? This brand new heroine takes the world by storm with her greatest act, her chest. A comedy about a cute little junior and her journey into street performance!

High school girls suddenly being falling from the sky over Tokyo, attacking and converting anyone nearby into high school girls. They survive all forms of attack and without a means to fight back the human population is steadily decreasing. Who's left to help save Tokyo?

On the Island of Eden, people awaken to their unique ability called "Xeno." People who are able to use Xeno are called Xenotakers. At the Holy Cathedral High School, Yohane Bonaventura is the only person in their class unable to awaken a Xeno. Will he be discouraged and give up, or will he be able to fulfill his promise to his late mother?

Misumi-san is in a relationship with her classmate, Maria. On a fateful day, she meets Maria's older sister, and an irreversible chain of events kicks into action as lust and hidden feelings enter the picture

From Game of Scanlation:

Park Chang-hyun had to move and move again because of his father's business.For the first time in 8 years, he's returned to the village where he grew up young. On the first day of his highschool a certain beautiful young girl catches his eyes. Her name is Yang Surh Hee. She currently reigns as the school's idol but in the past they both went to the same school. Before his transfer he had a big fight with Surh-hee but their reunion went smoothly and he returns home... to find Yang Surh Hee!?!?!? "Yang Surh Hee is my house maid?!" "If you tell this to the school I won't forgive you, Park Chang Hyun!"

Takayukashiki-san knows many things that are way too weird(especially perverted things). With her, you will become a little wiser and a little more indecent.
A comedy manga that will satisfy your perverted curiosity!

Natsuki Nanahoshi is a junior high school student with an unlikely secret who is scouted by a… stuffed animal? This… thing tells Natsuki that keeping his secret for so long has given him magical powers, and then forces him to become a Magical Boy!

Enjoy this “forbidden” magic fantasy filled with sorcery, boys, and kissing!

Aki tries to find the guy who helped him at the station three days ago. the only clues he has are the showy blond hair, the school uniform, and the weird stuffed toy. from Dear Marionette

From Karma Falls Scanslations:
Mei Tachibana has spent her 16 years without making either boyfriend or friends. One day, she roundhouse-kicks a popular boy in school, Yamato Kurosawa, because of a misunderstanding but for some reason it seems that he takes a liking to her and one-sidedly claims that they're friends.

A game programmer with a special skill....

From Tokyopop:
In a school where martial arts are standard curriculum and disputes are settled by officially recognized duels, Ryoko takes on all comers. As the #1 fighter at Daimon High, Ryoko's battles to defend her position never end and "Finals" take on a whole new meaning.

From ADV:

Sosuke has finally lost his mind - and his memory! Rehashing his previous exploits will keep Kaname busy, but it doesn't take long for the military mind of this soldier to bounce back with a bang - literally! He's locked, loaded, and back to his old self by first period, as bombs and bullets grace the halls of high school!

The story of a two-person shogi club: the senpai is obsessed with shogi and making her expressionless kouhai confess.

Due to family reasons, Zongzheng Yue completely loathes otakus. He was originally living an ordinary life, but littering a soda can on a certain day triggered a series of events, and made a nonsensical girl who professed to be an otaku god enter his life. Under the otaku god’s instructions, Yue has no choice but to start learning how to become an otaku. Then, his loli senior and childhood sweetheart also began to enter Yue's life under the supreme otaku god Lan Ling's "interference".

From Kirei Cake:

Various short 4koma scenes about five girls, Shinobu, Alice, Karen, Youko, and Aya, all attending the same school together. The main idea behind all of the scenes are that the two English girls, Alice and Karen (Alice is pure English, while Karen is half-English, half-Japanese), are trying to live in Japan and are trying to learn their culture and language!

"I made wonderful friends!"

It's a hilarious one shot about the beginning of a relationship between a bullish but clueless heroine and a shy boy!

Clumsy Arashiyama is a girl with a love for mysteries and a knack for getting into trouble. She works for an old lady’s lackluster maid café in a small shopping district. The cafe is largely unsuccessful in attracting customers aside from Sanada, a regular and one of Arashiyama's classmates (who has a secret crush on her). One day Arashiyama’s clever friend Tatsuno is invited to the café, and, upon seeing the miserable state of things (and Sanada, whom she has a secret crush on), decides to work there. Don’t miss the crazy antics of Arashiyama and friends, mismatched love stories, and all the hilarity that is created as a result, in Sore Machi.

From MangaHelpers:
There is a magic love app that supposedly helps people's dreams of love come true. The first story of this love app follows Tetta and Ginko, friends who have bickered since grade school. Tetta looks up the magic app on a whim, and ends up with an application that is connected to Ginko. When he manipulates the "Ginko" on the app, it affects the real girl. He's embarrassed to have it in the first place, but he can't uninstall it without inputting Ginko's measurements. Whether he actually likes Ginko romantically or not, it seems that this app could only make the situation worse.