Kurokiya Ruu is on the verge of repeating a year so her childhood friend Tadashi Tadao (whose name literally means straightforward man) steps up to teach her. However, they end up not getting any studying done as she uses this situation to try and seduce him at every turn.

The story of a girl who wants to get her crush flustered and the straightforward guy who won't get embarrassed.

Terror has paralyzed the clockwork metropolis of Tokyo! Possessed by demons, people have begun to burst into flame, leading to the establishment of a special firefighting department: the Fire Force, ready to roll on a moment's notice to fight spontaneous combustion anywhere it might break out.

One of the Fire Force teams is about to get a unique addition: Shinra, a boy who possesses the unique power to run at the speed of a rocket, leaving behind the famous "devil's footprints" and destroying his shoes in the process. Can the Fire Force discover the source of this strange phenomenon and put a stop to it? Or will the city burn to ashes first?

The youngest A-rank adventurer, child prodigy Kaiser, finds three babies who were the only survivor of a destroyed village. Then he decided to give up his job as an adventurer and raise them. Over time, the girls grow brightly and show exceptional talents in fencing, magic and management. However, these girls also seem to love their father, Kaiser!

Orignal webnovel: https://ncode.syosetu.com/n2223fo/

Miyamae Kaito can't use magic at all! At this rate, his promise with his childhood friend of becoming great magic-wielders together will be ruined... When he was about to give up on his dream, Kaito suddenly feels magic power. However, that was magic that makes people who meet his eyes fall in love with him, a "charming magic"! Being popular is fine and all, but is this kind of magic really alright!? An envious fantasy love comedy of dreams and magic— the luckiest harem academy life, begins!

Author's Twitter: https://twitter.com/atsuon38
Manga's Twitter: https://twitter.com/LOVEorMAGIC

As our humble corporatist Itonami Norio is suddenly summoned to another world, it would look as if he'll be sent to a battlefield-- he, however, holds no skill to speak of, and as he is deemed to be useless. He negotiates with The King and receives a plot of land -- an empty, deserted plot of land, with no inhabitant in sight. Norio holds something he couldn't bring himself to tell anyone: The Master of Supremacy, a gift which will grant him the most comfortable of lives in this world. Hereby begins the Norio's colorful story -- having a mermaid he fishes declare herself his wife, becoming neighbors with the Undead King, this is his busy but enjoyable life -- and now a dragon appears ?!

This protagonist, the most demonically strong exorcist. Akira the S-class exorcist sent from Germany to investigate a paranormal event in a certain city in Japan. He shoots creatures from other worlds with his beautiful exorcist partner Chikage.

A big junior is set on pampering her senior!? An uneven love comedy! ♪

Jiang Chen crossed into the judgment day after the nuclear war, and there was a mess everywhere. In order to survive, Jiang Chen led the refugees to establish a base area and set up a federation. Then carry the judgment day's technology and return to the true world. Change the political structure of the earth, rescue the world in a critical moment, and establish the Great Union of Earth Federation! Expanding the territory and fighting the threat from the sky.

The son, tired of his overprotective mother that has a son complex with a huge imagination for misunderstandings for him and will protect him from all.
Tries to go on an adventure but his mother tags along whether he wants it or not.
NOTE: The mother is the strongest person in the country (OP level)

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...!?

At the risk of his own life, a young man sets foot in the ruins of a devastated old world. His name is Akira, and in order to claw his way out of the hellhole that is his birthplace of Slumtown, the boy became a hunter. In the wastelands he happens upon a strange woman, standing perfectly still, stark naked.
She is beautiful, but it seems that only he can see her. She exists incorporeal, tantalizingly beyond any touch, and she tells him her name is Alpha.
Alpha won’t show even a sliver of her real intentions, but with a wide smile, she brings Akira his first commission as a hunter. Akira takes the task, if only to become a stronger hunter, and having entered a contract, their dramatic lives in the hunting profession was set to begin.

From Stories of the Boy Hunter as recorded by the Eastern Hunters’ association.
Written post-collapse of scientific civilization.

A salary man is quite depressed, especially on Mondays. At his lowest point a well-endowed High-School girl calling herself Ai-chan stumbles breast-first into his face. The concussion she gave him served as the start of their relationship.

This page refers to the Twitter manga's official serialization, which began in Weekly Young Magazine on November 16, 2020.

The amusement park planet of Granbell Kingdom has been abandoned for 100 years. Rebecca and her talking cat Happy are the first visitors in years, causing excitement among the robot inhabitants. However, Rebecca soon discovers that she’s not the only human in the park!

Shiki has lived on Granbell for most of his life after being taken in by the Demon King robot, who became his grandfather-figure. Now he does repairs for the robots in the park. But the robots then strangely turn against Shiki to force him to leave the planet with Rebecca in order to fulfill their promise to the Demon King, who knew Shiki was destined for greatness. With the ancient powers of Ether Gear, Shiki begins his journey into space, where dragons roam the stars!

Natsukawa Tsubasa has just moved from Tokyo to Hokkaido, in the middle of winter. Not quite appreciating how far towns are in the country, he gets off the taxi at the next town over from his destination, so he can see the sights around his home. But he is shocked when he learns the "next town" is 3 hours walk away. But he also meets a cute Dosanko (born and raised in Hokkaido) gyaru named Fuyuki Minami who is braving 8 degrees celcius below 0 weather in the standard gyaru outfit of short skirts and bare legs!

The older brother, imprisoned by his sister, dies just as he escapes and is reincarnated in another world!
He thought he had been freed from his demonic sister, but now she too has been reincarnated in the same world...?

WN Raw: https://ncode.syosetu.com/n7437dj/

Kouta Takeda who just started working at XOX Corporation, meets his new boss, a beautiful woman with big breasts named Kyouko Takizawa.

Ooyama-kun normally doesn’t get involved with Akutsu-san, a delinquent girl in his class, but for some reason she makes his house her hang-out place! Will Ooyama do something horrible to her behind closed doors or will he chase her out? But dealing with Akutsu-san’s sexy, cute behavior in such a confined space… he’s sure to get flustered! He wants her to go home, but he doesn’t? A teasing comedy under a single roof!

Note:
Yankee Musume (ヤンキー娘) is the pre-serialization name

Links:
Artist's Twitter: https://twitter.com/NAGAOKA0
Artist's Pixiv: https://www.pixiv.net/member.php?id=133935

Third son of a "beggar noble" Nore lost his job and was at a loss. But as he was contemplating whether to become an adventurer fortune struck.

A Hidden Dungeon that no one knows how to get enter. A legendary place full of hidden things like extremely rare magical beasts, magic tools for gaining power and items that would be scarce all over the world. That's the kind of entrance that was opened.

"Without telling anyone about this place I'll secretly become the strongest."

This world is harsh to nobles of poverty. Without authority of honor, if I could at least acquire power――

The manga centers on a second-year high school student who is standing in for his Catholic priest father to protect their church while his father is away. He saves a troubled beautiful young girl who is in front of his church one day, but she turns out to be the demon Asmodeus.

A magic nerd's life came to an end after a dreadful encounter with the nobles who ended his life with a powerful spell. His last wish, being able to study and master more magic, has been answered when he was reincarnated as Saloom Lloyd, the 7th prince of Saloom Kingdom. Now he'll be able to perfect his magic as he pleases...