From MangaHelpers:

Yuta is a normal high school boy living in a normal house with his parents, but his cat turned into a beautiful girl. His parents believe that the cat-turned-girl is a god that will bring great fortune to the family. Yuta has now been forced by his parents to marry his cat. Will Yuta be able to accept the fact that his future wife used to be a cat?

From Shoujo Crusade:

After breaking up with their respective exes due to certain circumstances, Nono and Kazuma suddenly find themselves in a relationship. How much does it really take to make things work?

From Shoujo-Sense:

Nono (15) dislikes flirty men because of previous experience, so she wants to date a serious, honest guy. When Akkun (25) confesses to her, it's like a dream come true. But does he really love her?

Yu, who passionately love tropical fish. In a new life of highschool, she met a boy who keeps meddling her, Yoshiaki, and his childhood friend, Saori, a girl that can't be honest to her feeling. Aquarium as a trigger, their feeling entangle and cross each other.

Saku Ooyagi returns to his old town after seven years and becomes reacquainted with a childhood friend, the ever-boisterous Mihoshi Akeno; but the reunion is far from merry since his last piece of memory between them is of her falling off a tree and him diving to save her. Regardless, Mihoshi focuses her all into improving their tattered relationship and forces Saku to join her astronomy club.

Basically this manga is about an astronomy club, and slapstick school life comedy as Mihoshi changes Saku's life.

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Sequel to Nozo X Kimi. In their second semester of high school, Nozomi and Kimio are in the same class again, still on their quest to help their schoolmates face their own private true-self. Nozo X Kimi migrated from Shonen Sunday S to the much more popular Weekly Shonen Sunday but, instead of being continued from where the previous serialization ended, a second season was started.

From MangaHelpers:

This is a diary-style 4-koma manga that depicts the daily life and observations of the 40-year -old author, who married a 26-year-old Chinese girl. The author immediately states that this manga-style blog was meant to show the quirky and interesting nature of his young wife. He is an extremely stereotypical "otaku" (Japanese nerd), while she is a Chinese girl enjoying and learning the Japanese culture.

A short 11 pages one-shot by Suda Kanon.

Maeda and Sakuma catch each others eyes every now and then. At the last day of school before summer break, they say 'see you later' but it doesn't really end up that way.

From MangaHelpers:
This volume is a collection of short stories. The title story "Aka no Sekai" features a boys' summer camp out in the country. The main character, Regulus, is reluctantly attending the summer camp, where he shares a room with a cheerful boy named Milan. Soon after arrival, though, some of the other boys begin acting strange, while claiming they want to see the color red. Will Regulus and Milan be able to figure out what is happening before it is too late?

1)The World in Your Hand- Natsuo Kanda's not sure who started the rumors about him being gay, but everyone at his office seems to be talking about it. His only consolation is the escort service he hires every month, and the night of pleasure that follows. This month is different, since his escort is newcomer Masachika. Despite being huge, the childish and puppy-like Chika is exactly what Natsuo needs, and even though it's a business relationship he finds himself growing more attached to the younger man...

2)Our New Year's Event- Actor Keita Otoo has managed to get New Year's Eve off, and plans to spend the night making love to his super cool boyfriend Ryouhei Nemuro. Keita's been so busy lately, they've barely had time to see each other. But with a night of wine and romance planned, what could possibly go wrong?

3)Gaka to Gakyou- Writer Aiji Hirakawa has trouble interacting with others, and so only has one friend, Takafumi Shibata, the son of very wealthy parents. While Aiji struggles, Shibata lives a relaxed life, something that annoys Aiji, even as he tries to suppress his feelings. But when he loses his temper and snaps at Shibata, the drunken Shibata pushes him down and...!

4)My Feelings

5)Beautiful Days

Ageha's older sister is getting married. But Ageha, who suffers from an enormous sister complex won't accept it. One day, in order to get Ageha more involved in the wedding preparations, her sister takes her to Velvet Blue Rose, a shop run by Yukari and Mitsu, a two-man team that design and make wedding dresses. Ageha, who's favorite activity is making exquisite purses for her friends, falls in love with the shop immediately. Will Ageha get over her sister complex and lend her support to the wedding? If Yukari has anything to say about it she will!!

From M Scanlations: In an isolated manor, Lance struggles hopelessly find a way to return Lilian to her former self with the help of her brother Julian. But the strain of living under such conditions is starting to affect Lance's sanity and soon after, an event occurs that changes everything. Original Chinese Webtoon

From Antisense Scanslations:
Anemone is just like all the other flowers at the flower shop until Akiko, a woman he's already fallen in love with, takes him to her home.

From Winter Translations:

It's love at first sight when the princess of industrial development meets the prince of special advance family! A story about first love that gets your heart puzzled and pounding.

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Shuuya Inukai is a model student at a high school who one day attracts the attentions of an ojou-sama, Kantori Isuzu, when she realizes that he is bearing, on his forehead, an X-shaped scar...that was also present on her pet dog's forehead...which leads her believe that Shuuya is actually the reincarnation of the said animal. And now Shuuya's days as Isuzu's pet begin.

On the first day of high school, Haruka meets the boy of her dreams but, he was the kind of guy who wouldn't allow anyone to get close. The distance between them does not shrink, even though she wants to get close to him. As a matter of fact, he has a secret that he can't tell to anybody...!?

Lee-Si-Hyun is a friendly normal schoolgirl whose hobby involves a radio program called "The Girl's Teaching Classroom: Viva Love You." She claims to have a mysterious confrontation with an alluring male teacher that she will soon meet. What will this new relationship of theirs become?

Poor Yuzu is an orphan who's too clumsy to hold a job. She's reduced to living in a playground -- until a handsome stranger named Hassaku informs her that she's heir to a fortune, and whisks her into a world of wealth, power, and more hot suitors than she can shake a scepter at! But there's a catch: Hassaku must turn this klutz into a lady of refinement, or Yuzu will lose everything!

Also included in this manga is an extra story called Naughty Honey:
"The boyfriend I made in college cheated on me."

When she caught her boyfriend sleeping with another woman, Kayako Ueno broke his front teeth... and it will cost her a hundred-thousand yen to repair them. So she takes a part-time job as a home tutor-- for playboy Haru-kun.