From In.Difference:

Yashio is a debt collector who one day ends up saving a girl called Mikumo from a car accident. Mikumo, wanting to repay his service to her, decides to help him out with his job. Yashio refuses at first and tells her to get lost, but he eventually accepts and a new combination pair is born. But these two aren't ordinary or even human; They are in fact cats from the hidden cat society!?

includes:
Kare to Kanojo no Futomin

Cayena, the Imperial Princess, was known as the most beautiful woman in the Empire. She was a woman who knew nothing but evil and luxury.
However, she was destined for ruin: she would be used as a chess piece by her younger brother to secure his throne and killed by her crazy husband.

“I’ll make you the Emperor.”
“… Sister, you're going to make me the emperor?”
“In exchange, give me freedom.”

She had to change things before she became that Cayena.

A sequel to "An Observation Log of my Fiancée - A Self-Proclaimed Villainess", following the married life of Cecil and Bertia.

One day, Mai remembers that her perfect stepbrother is a character in a death game manga, and that one year later he will hold a death game involving all of his classmates, killing his sister in the process. Mai plans a variety of surprises for her stepbrother every day based on what he said in the manga, "Nothing unexpected happened, so I was bored," but as the days go by, he begins to show abnormal signs... Only I know what my brother's really like. Pepu's comicalization of Inada Sou's popular web novel!

『She’s always putting on that grumpy face even though she’s not actually that upset! Oh, why can’t she just be honest with herself…!?』

『She is a tsundere, after all? When her embarrassment levels exceed a certain limit, she will explode into anger. However, the point that she’s suppressing under the surface is that she wouldn’t mind that sort of thing if it were in a less public place.』

As Endo-kun passionately reacts to the antics of Lady Liselotte, the villainess of an otome game, Kobayashi-san provides a painstaking breakdown of her tsundere behaviour.

Suddenly, one person could hear their voices; Liselotte’s fiancée, Prince Siegward.

That is where this story begins.

The "bittersweet, mysterious story" revolves around Chocolat Aikawa, a chocolatière who runs a shop called Chocolat Noir. She can grant wishes to the troubled people who visit her shop -- if they give her something precious in exchange.

In the Chocolat no Mahou (The Magic of Chocolate) series:

V.01 - Chocolat no Mahou
V.02 - Bittersweet
V.03 - Creamy Sugar
V.04 - Dark Spice
V.05 - Evil Essence
V.06 - Fruity Flavor
V.07 - Guilty Crunch
V.08 - Honey Blood
V.09 - Ice Shadow
V.10 - Jewel Syrup
V.11 - Knocking Egg
V.12 - Love Flake
V.13 - Melty Night
V.14 - Nutty Carnival

When his father re-married, Kazuichi was a timid boy who was easily bullied by his younger stepsister Yami. Through hard work, Kazuichi has become a handsome young man who's the president of the Archery Club and admired by everyone. All in an effort to impress Yami as a reliable older brother, or as something more?

Tasuku Nakamura, who was thrown into the sea in a marine accident and tried to help his best friend, ended his short life of 25 years. Formerly a mediocre office worker, when he opened his eyes, he was in the form of a six-year-old baron's daughter, Sophie Linier. At first she was confused by the changes, but she was reincarnated as a beautiful girl and decided to live as a lady in a different world.

This is a collection of short stories depicting the beginnings of love by Nakamura Hinata. Four cute and tender stories to bring a smile to your face. 

Female college student Aoi inherited her deceased grandfather's ability to see ayakashi. One day, while Aoi is feeding some ayakashi, a demon appears! He declares that Aoi's grandfather owed a great debt, and as compensation, Aoi must marry the demon! Aoi refuses, and decides to pay off the debt by working at the inn of the afterlife, the Tenjin-ya.

From Aka Roze Tenshi:

Kaji Kotori is a shy girl and was always bad at making new friends, especially with guys. Since the start of high school she has been made fun of by Kaji Yukito who's the center of attention of the class. Rumors are that he was a delinquent during middle school but he doesn't look like one. Here comes the life of Kotori and how she adapts to love.

Matsurika Kou is pretty content with her modest rise in position from a low rank palace maid to an official within the inner palace of Hakurou country. One day her boss asks her to take part in a practice marriage interview in place of a co-worker who got sick. During that fateful meeting the wheels of fate will begin to turn...

A Chinese-esque Cinderella story.

From Summer Rain:

The story unfolds in the Edo era in the Yoshiwara red-light district of Tokyo. Akane, a girl whose family is from Samurai, is sold to a brothel to be orphaned. To be the "little sister" of the "lady" No 1 spot. This will bring a client ask, then she meets a stranger very peculiar man. What will happen after that meeting?

I reincarnated as the villainess in a game world—
I’m not afraid of banishment, I’ll manage my territory and live as I like!

I reincarnated as Celistina, the villainess of an otome game.
As the fiancée of the crown prince, in this world where everyone is gifted with blessings by the gods and spirits, I’m the “young lady without a blessing”. As a result of being a fan of the game, I know that the crown prince will be with the heroine sooner or later, and he will break our engagement. Alternatively, if they don’t end up together, I will be executed…

“I’ve recently come to like someone. He’s my classmate.”
The short and sweet snapshots of a blossoming romance between two unsuspecting students! Packed with fluffy interactions between adorable (not to mention handsome!) characters, this series is sure to satisfy your sweet tooth~ (Source: Melon Drop Scans)

Madoka is a high-school student who loves cute guys.
Shikura, who works part-time at her family’s restaurant, is an incredibly handsome young man, but also has an incredibly unpleasant attitude…?!
[Blueberry Scans]

I’d been stanning the hero for 3 years when I was suddenly caught red-handed by his tyrannical doting father, Duke Hades Louvremont.

“Ceaseless pursuit, expensive gifts, and now you’ve come alone all this way up north with no regard for your life…”
“I’m sorry. I have no excuse.”
“Alright, I’ve lost. Your devotion is undeniable.”
“...You think so too? Even I admit that this is the pinnacle of devotion.”
“Many women have pursued me, but none as persistently as you. I stand amazed. Let’s hold it, then. Our wedding. As soon as possible."
“Ha... Yes, I’ll accept my fate.”

Silence.

“Wait, pardon?! What?”

What did he just say?
Surely I must've misheard?
But the duke, smirking at my shocked face, gave the finishing blow.
“I said, I’ll marry you.”

Wow.
The hero’s dad has an inflated ego.

Taichi Arima is overworked at his day job. One day, going home late due to working overtime, he saves a fluffy white cat from being run over. He gains a special "Tame" ability and is transported to another world. With such a strange ability, what will he do... Why, open a Fluffy Cafe, of course!

As the Kingdom of Elpasa fell before the blade of the Empire's greatest hero, in order to survive, Princess Beatrice assumed the guise of 'Chloe', a slave. But then, she caught the eye of that very same hero...

Thirteen-year-old Mirai Asahina meets young magician Riko. With the help of Mirai's stuffed bear Mofurun, they transform into the legendary magicians Precure to fight Dokuroxy's minions, who are seeking the Linkle Stone Emerald.