From Storm in Heaven:

The story begins in Europe, during the first years of the XX century. On a background of intrigues, machinations and a Europe that is going straight toward World War I, three kids meet at a strict conservatory in Germany.

Julius met Isaac at the famous Orpheus' Window and later in another event met Klaus there. The legend told that two lovers met at Orpheus' Window would end in unhappiness. But Julius met two different persons, and they didn't know Julius' secret. In fact, Julius is a woman who's forced to dress up and pretend to be a guy.

But she isn't the only one who has secrets. Klaus, for example, is Russian. Is he a communist spy? Then the whirlwind of fate began.

From Nyan-Nyan Rampage:

"The final arc of the story begins...

When Takao Osugi receives the mysterious "Universe of the Four Gods" book from his mentor, Einosuke Okuda, he does everything to keep it away from his young daughter, Suzuno. But when disaster strikes Tokyo, can he still protect her from her fate?

Shortly after the tragic finale of Genbu Kaiden, young Suzuno Osugi's tale as the Priestess of Byakko beings to unfold!"

This is a story of Ikuma and Sumika, two childhood friends who recently got married and started a brand new life together. At first sight, they seem like a happy couple with nothing to worry about, there is one problem: they have trouble having sex together. With both of them having zero prior experience, this awkward couple tries their best(?) to figure out together how to do it for the first time.

Satou Koharu is a pretty girl that everyone can recognize.

But her attitude with anyone is so bitter that she got nicknamed “Salt-God Sato-san". Anyone who tried to get close to her got emotionally injured in a brutal way.

Though for some reason, I was able to save Sato-san from some pick-up boys where I was working at. Which made her like me, and thus I became a friend of “salt-god Sato-san.”

In front of everyone, she is a salt-god, but in front of me, she is very sweet. This is a high school life story between Satou-san and I.

Web Novel (Raw): https://ncode.syosetu.com/n1912fp/
Author's Pixiv (Pixiv): https://www.pixiv.net/en/users/4770132

Kouji and Izumi are still playing one step forward, two steps back in their angst-ridden dance of love. The drama is taken to new heights in this series: just how far will Kouji go in his desperate love for Izumi? Will these two ever be together and be happy at the same time?

Note - Volumes 1-14 have been completely translated into English. However, several years after the supposed finale, the mangaka published 3 more chapters (recently compiled into a 15th volume) which act as an epilogue for the series, though the 14th volume had a conclusion of sorts in itself. Of these, chapter 1: Ai ni Obore, Ai ni Shisu has been scanlated, but chapters 2 and 3, titled Rakuen 1 and 2, have not.

Fuyuki is a beautiful and cool gal! But there's a secret side of her that she only shows in front of her husband...? A cute love comedy with a gal wife!

A fantasy story about Kiska, a boy who is mistreated by the villagers. He manages to survive thanks to his childhood friend Namia, who was the only one by his side. One day, Namia is murdered by three men, and Kiska is accused of the crime and banished to an inescapable class S dungeon. However, he finds himself in a different world where he can use "Save and Reset" to get back on his feet no matter how many times he dies. The story is about Kiska's quest for revenge against those who wronged him and his friend

"Understand for yourself that you are worthless. You are already obsolete."

Dion, the recovery wizard who was told so, was seriously injured by the hands of party members and left behind in the interior of the highest difficulty dungeon.

On the verge of running out of his life, he happens to encounter a dying dragon. Dion realized that he couldn't help him anymore, and he treated the dragon to live as a recovery wizard until the end. Then the dragon thanked him and even shared the power of the dragon. In addition, this dragon seems to have been a legendary god dragon-class. Dion escapes from the dungeon with his new companion, the dragon, and restarts as an adventurer. He captures the difficult dungeons that stand in his way, and his abilities are recognized and he has all the strong men on his side.

This is a story about a recovery magician who leaves behind even the party he was in from a difficult situation and becomes the strongest adventurer in the world.

Links:
- Web Novel: https://ncode.syosetu.com/n6844gh
- Official LN (JP): https://www.bunkasha.co.jp/author/a236341.html

In middle school, Ayumu kept getting teased and pranked by Runa, even though he's a year below her. Now that she's in her second year of high school, she's ready to be the experienced senpai for the incoming freshman Runa.

His more-than-friends, less-than-lovers cousin is so cute that he could die!!!!?

Nozomu is a boy staying at his uncle's house over summer vacation. In the countryside, where there are no convenience stores, or any busses even, the boy has a problem. That problem is his younger cousin, Sou! He’s being led around by this tanned, energetic girl day after day and can’t show her the dignity befitting his older age!

On top of that, whether intentional or not, he’s getting flustered by Sou’s inviting demeanor. Eventually, Nozomu couldn’t take his eyes off Sou and is falling more and more under her spell...!!? With a “cousin” like this, his reason is having a hard time hanging on!

This is a romcom with a guy who’s going under from all his tanned cousin’s teasing!

Jirou, a third-year in high school, is forced to live with a gyaru named Akari under a course called the "Couple Practical". In order to be paired with their own romantic interests, they're going to act as a married couple...!?

Kazama Kenji likes to believe he is something of a delinquent. Moreover, others seem to like to agree that he is. Of course, Kenji's gang finds their way to a group of four not-so-normal girls - Chitose, Sakura, Minami and Roka - and all at once, whatever reputation he may have, is nothing compared to the outrageous behavior of the girls. Shanghaied into joining their club, what will happen to his everyday life from that point on?

Some 20 years have passed since the protagonist was summoned to another world and retired from the army. He is still single in his 40s and lives as a low-ranking professor, until one day, an elite 'monster girl' transfers into his class.

I was reincarnated into the body Cecilia Silvie, the villainess of an otome game.
According to the plot, what awaits me in the normal route is either a slow, painful death or an instantaneous one... Essentially, every route leads to my demise.
Then I'll change my fate! And that's why I decided to become a man.
However, I made a mistake during a certain event, and the story began to head down an unexpected path...?

The second spring at the Advanced Nurturing High School is welcoming Ayanokoji and Class D. The special exams aren't only what awaits them, but the unique freshmen as well. Kazuomi Hōsen and Ryūen. The two who shared the bad reputation between themselves during Ryuen's middle school days. Takuya Yagami, who proclaims to come from the same middle school as Kushida, is approaching her. And the capricious Ichika Amasawa who is pulling Ayanokoji left and right.

Kugayama Hajime, a boy living in the countryside, comes back to his old classmate Momose Akira, whom he used to admire.

Just as he is about to watch her from afar and enjoy his sweet and sour youth, Akira makes an unexpected approach.

And there was a “fate” that was more than he could have imagined.

A teacher finds herself getting a marriage proposal from her former student, who has had a significant growth-spurt since they last met.

The cool, lone-wolf girl and her precious, unrequited crush!

(Source: Ganma!, translated)

《 Today, I’ll confess to Ko-chan! 》 A voice suddenly heard by Kota Nitake, a high school boy who is not particularly popular. It was the voice of Ayano Yumemigasaki, a childhood friend who always has an attitude that doesn’t look like him! Kota didn’t know that Ayano fell in love with him. 《 I really wanted Ko-chan to talk to me … 》 Kota begins to be aware of Ayano’s unrequited love. However, an unexpected side effect of “voice of the heart” ……! ??

In a distant place, on a certain mountain, a young dragon has been captured by a beautiful female tiger. The two, who were predator and prey, begin a journey to find a way for two animals with very different life spans to live by each other's sides.

TL;DR: Tiger Woman x Dragon Boy