From Tokyopop:
Minami Fujii is an employee at a high-powered advertising firm. She’s good at her job but finds herself torn between the pressure and expectations of her career and her attraction to two of her coworkers: the younger, arty Ishida, and the classy, put-together Ogiwara!

"I want to break up with you."

In the winter of his first year of high school. Yuta Miyamoto, who tries to be "kind to others," was told by his girlfriend, Yumi Asakawa, that she had to break up with him. While he is still recovering from his broken heart, Akane Kurosaki, a junior, calls him "unable to get a girlfriend," and Ruriri, his favorite maid, calls him "like a slave". Yuta, fed up with the situation, declares his intention to break off relations with all three, but the reaction is not what he expected!

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

10 years since he reincarnated in hell…Takamichi is troubled. With the “Incubus” power unlocking further to become stronger by having sex with women but his growth peaked. “I’ll move to a new area, wait for me beautiful women of the new world!” Sexy & violent pretty girl battle fantasy!

Healer Carol is an E-rank... even among adventurers, it's the absolute weakest.

Even though, I was told that I’d be useless... I tried my best for my comrades and continued creating medicines but… in the end, I was still thrown out of the party!
I don’t have enough money to get back home and the future looks bleak in this strange town.

In the meantime, Carol met a dying adventurer, Kaido, by chance. She treated him with the medicine which she had created for free. While doing that, for some reason, the medicine received extremely high praise---!

Highschool teacher Saeki Nao is secretly a hardcore otaku who loves yuri manga.
One day, at a doujinshi convention they participate in, Nao is eager to convey her feelings to "Nyapoleon", an artist she worships.
However, it turned out to be a girl from her school, Kurumizawa Haruka, and moreover, she had to help her.
After the event, they decided to go out for a meal, at Haruka's suggestion....
When she wakes up in the morning, there is Haruka in the bed...?!

High school student Mikoshiba Ryouma was summoned to a different world in the middle of a war. Sensing the malice from the one who summoned him (a summoner of the O'ltormea empire), he uses his martial arts to run away, killing important people of the empire during his escape. After the escape, he rescues two twin sisters from the hands of thieves. The sisters who can use magic, swear to serve him as subordinates. Thus, Ryouma begins his journey on the path of the supreme ruler.

This is a world where androids operate virtually indistinguishable from humans. In this world, assistant android Hinageshi has fallen in love with high school novelist Kaede. However, if anyone were to find out, she’ll end up being processed. The debut of a rival, her first friend, a mysterious phone call and the sweetness of youth. A story with many twists and turns!

Yuichi Shiro is a foolish, narcissistic, and oblivious teenage boy. After a sudden incident his once ordinary life goes through great changes. How will the optimistic self proclaimed genius handle the life he will lead from now on? As well as handle the new acquaintances and enemies it brings with it. Let the story of action, life, romance and stupidity begin. (Original Web Novel: https://www.fictionpress.com/s/3068594/1/Soul-Anomaly). Current cover is actually from the web novel that has a different artist to the manga.

In an attempt to win her homeroom teacher's heart, Itsumi Toudou purchashed a shady love potion, and tested it out on her stuck-up student committee president, Yomotsuka. Now, she has an uncharacteristically affectionate girl to deal with, and she's not even a lesbian! Right?

Izumo is a scary-looking top student. Everyone is afraid of him, but in reality, he just wants friends and a fun school life. One day he is targeted by a succubus named Anastasia who attempts to steal his virgin soul.

A reboot with improved art but similar story of the old version.

Koyuki Shirogane, a girl known for her beauty and equally harsh tone, giving her the nickname "Venomous Snow White," is saved by Naoya Sasahara as a man tried to hit on her. She may try to act strong, but on the inside, she is merely a young girl. Having been saved by Naoya, Koyuki falls for him, and Naoya on his end falls for Koyuki's innocent and cute attitude. Both fail to be honest with each other, but eventually bring themselves closer to admit their feelings for each other.

From Seven Seas Entertainment:
Monsters? They're real, and they want to date us! Three years ago, the world learned that harpies, centaurs, catgirls, and all manners of fabulous creatures are not merely fiction; they are flesh and blood?not to mention scale, feather, horn, and fang. Thanks to the "Cultural Exchange Between Species Act," these once-mythical creatures have assimilated into society, or at least, they're trying.
When a hapless human teenager named Kimihito Kuruzu is inducted as a "volunteer" into the government exchange program, his world is turned upside down. A snake-like lamia named Miia comes to live with him, and it is Kuruzu's job to take care of her and make sure she integrates into his everyday life. Unfortunately for Kuruzu, Miia is undeniably sexy, and the law against interspecies breeding is very strict. Even worse, when a ravishing centaur girl and a flirtatious harpy move in, what's a full-blooded teenage human with raging hormones to do?

Ojou Kotone is a first-year high school girl who was having trouble using the ticket machine at the station, Suguru Sewa, a first-year high school boy passing by helped her out, and he surprised as she transferred to Sewa's high school. It's her first time to taking the train, her first trying curry udon, Sewa being her first friend. This is a love comedy of firsts between a young lady and a caring high school boy!

Hinata is a high school student who reincarnated into a different world and became a hero by the power of God. He defeated the Demon King with the help of the dark elf Mariabelle and other friends. Thus he safely fulfilled the wishes of God and returned to this world.

One month after Hinata returned to this world, for some reason Mariabelle also came here from the other world !! The reason she came here is to be with her beloved Hinata !! ~~~ With heavy love and a teaspoon of jealousy, she attacked Hinata every time he refused !! (in many ways).

Will Hinata, who has decided to live with the Yandere Mariabelle, be able to live safely (?) !! A sweet and thick romantic comedy woven around the dark elf beauty's slightly heavy schizophrenic love !!!

I thought I was an illegitimate child… but it turns out that I was a complete stranger?!

A year after transmigrating as an extra, I found out that I was on the verge of being kicked out.

I said I’d rather leave the house on my own.

“Actually, this child is my daughter. Right, daughter?”

Did I catch the attention of the psychopathic duke?

‘I heard that the money he gave after playing with someone was enough to buy an island?’

I got along with him as his daughter because I thought I could get his fortune later on. And a few months later, I would leave his house with a thick bank account.

“Stay by my side until I tell you to leave.”

However, my dad, who regarded me as a toy, came looking for me and held me back.

***

After returning home due to dad’s persuasion, the families and my dad fought to adopt me. My uncles and aunts gathered to protect me, and future psychos began to have strange obsessions over me.

“Happy Birthday, Ayrin. You’re the head as of today.”

On top of that, the duke’s position was my birthday present.
Everything is going just as I expected.

[Hey, how long are you going to sleep? Grandma told you to take your retainer off!]
[Cha Miso, you’re going to die!]

What is that voice?
Will I be okay like this? (Synopsis: Gourmet Scans)

When Sora enters high school, his homeroom teacher is a sexy gal with huge breasts and she’s none other than the changed version of Suzune, the innocent girl next door who was his first love! As the teacher’s “educational guidance” escalates day by day, Sora is awakened to pleasures he’s never known before…!

A clumsy knight and a magician who struggles to understand his own feelings. The story of how two arch-enemies end up closer than they ever thought they would be. Spin-off of「Maou no Ore ga Dorei Elf wo Yome ni Shitanda ga, Dou Medereba ii?」, which follows the daily life of Barbaros on his job of protecting the Captain of the Holy Knights, Chastel Lillqvist.

“O, Hero!” With that cliched line, Kazuya Souma found himself summoned to another world and his adventure-- did not begin. After he presents his plan to strengthen the country economically and militarily, the king cedes the throne to him and Souma finds himself saddled with ruling the entire nation! What’s more, he’s betrothed to the king’s daughter now?! In order to get the country back on its feet, Souma calls the wise, the talented, and the gifted to his side.Five people gather before the newly crowned Souma. Just what are the many talents and abilities they possess… What path will his outlook as a realist take Souma and the people of his country down? A revolutionary transferred-to-another-world administrative fantasy series starts here!

Satou has been in love with his childhood friend and neighbour, Hime, ever since she and her grandfather appeared out of nowhere 10 years ago. Now a dazzling, yet mysterious high-school beauty, she makes it more and more difficult for him to confess his feelings. As the anniversary of their first meeting is nearing, will he muster up his courage to transform their friendship into something more? Or will an entirely different fate await this tightly bonded pair?