Japan has entered a new era called “Reiwa”, after moving past the Hesei Era on April 30th 2019. It is in this era, past the time of people like the legendary Akagi Shigeru and others like him who gambled on mahjong for a living, that a new gambler has arisen known only as “Yami-ma no Mamiya”, which in English might translate to “Mamiya of Mahjong's Darkness”.

Work is always on time, no play, always wrinkled between the eyebrows, the intimate atmosphere of the OL, Harukawa's back is a non-standard big eater that rises with tension in front of food (& Natural) was a girl !!
Harukawa's pleasantly exciting eating and knowing one side of Harukawa little by little, attention is also paid to the relationship with his colleague, Serizawa, who seems to shrink and does not shrink, a food love.

Konohoshi Umika is a high-schooler who is very bad at communicating with others. Feeling almost like an alien trapped on Earth with nowhere to belong, one day she meets a girl who claims to be an actual alien!

Shindou Eruko, a glasses, big breasted beauty, found a job as a handyman for the Amaguri Handyman service after her NEET life comes to an end as her savings ran out. She immediately falls for her co-worker Hoshi-kun on their first day working together, but there's a problem: Hoshi-kun is a high school boy, while Eruko is a 27 years old onee-san who has trouble telling reality and delusional. She ends up constantly scheming to get close to Hoshi-kun to turn many of her delusions into reality...

This manga takes place after Vol.14 in Henjo - Hen na Joshi Kousei Amaguri Senko

This shitty world that's nothing but a trashy game, he and I will definitely escape it together.

So, all these annoying women trying to take advantage of him are just a nuisance. What's worse, it seems like he's beginning to have some feelings for them.

That's why, for his sake, I'll eat them up first.

But, just what is this power...?

Hana, who lives on Tonaki Island, a small island with a population of 600, loves reciting so much that she holds public reading sessions for the children of the island. Mizuki feels that Hana's "reading" has the power to attract people, and invites her to join the broadcasting club, of which she is the head.

"Tell me your true wish and I'll make it come true."
"I want to join the broadcasting club."

Hana decides to join the club, and has many "firsts" with the members of the broadcasting club, deepening her love of reciting...

17-year-old Ichirou Satou is an average guy who always happens to find himself in a perverted situation with his teacher, Kana Kojima. Follow this erotic love comedy about their mishaps and how Ichirou and Kana choose to handle them.

The four Golden Times one-shot prequels are included formally as Chapters 1-4 of Nande koko ni sensei ga!? in the Volume 01 Tankobon. The series continuation begins at Chapter 5. Later chapters and volumes follow new student-teacher couples at the same school Ichirou and Kana attend.

An average romcom told from the perspective of the losing childhood friend. Other things happen as well.

From MangaHelpers:
People have been created that are human-animal hybrids, and powerful businesses bet on the outcome of their duels. College student Nomoto Yuuya's casual acquaintances ask him to drive them around to pick up girls one day, which he soon finds out means by force. The girl they kidnap is an animal-human hybrid named Hitomi, who slaughters all of them except Yuuya. Hitomi is a honey badger, which has been called the most fearless of all animals. Now Hitomi is assigned to stay with Yuuya, for his protection.

After his unfortunate death, Tomokui Kanata has been reincarnated as a member of the weakest race, a goblin named Rou. However, Rou has retained his previous life's memories, as well as an ability that allows him to gain strength and abilities from eating. He also possesses a unique evolutionary tree.

Now, Rou has made a promise to himself that he would live this life to the fullest. In this alternate world of survival of the fittest, events unfold with competent subordinates and comrades.

Orginal Webcomic

After losing his girlfriend to a brave hero, Toru is expelled from his S-Rank party. With a feeling of sadness and pain in his heart, he defeats a demon he meets outside the city, and his ability [to save experience] is broken! Toru becomes level 300 in the blink of an eye! With this power that far surpasses that of heroes, there is nothing that can stop him. Kaede, a slave he met on his journey, forms a group called the "Mangyu Brigade", and easily completes dungeons, acquires the legendary sacred weapons, and thanks to his skills, his friends level up easily! He rescued a countess who was attacked by bandits on the road, and befriended a legendary beast. Oru's journey continues at a leisurely pace, as he repeatedly encounters various people along the way, while his former party of heroes are deprived of opportunities to play an active role and fall into decline. This is the beginning of the life of a 300 level warrior!

Original Webnovel: https://ncode.syosetu.com/n9483ge/

In an impoverished territory, to a poor aristocratic family, a single boy would be born. Destined to become the next feudal lord, this boy’s name was Pastry Mil Molten. Pastry, the possessor of a rare talent in his previous life, had a promising future as a confectioner.

Merciless thieves, rabid beasts, scheming nobles, a domain in drought, many hardships such as these will befall the boy.

Our handsome successor, armed with his ingenuity and love for sweets, will survive in this world of swords and magic.

With a smile on his face, aiming for a territory filled with happiness, the young Pastry‘s challenges begin.

The best sweets and the best story. A single boy’s journey to change the world. A royal sweet fantasy.

In ancient times, there existed the land of Wa, split between the reign of the gods and the world of man. It was an age when gods and men existed together.

Miyo, an orphan girl, lived in fear of death as the designated sacrifice for the ruler of her village, Kippuuson-no-Mikoto-no-Kami. However, her fate changed as she encountered En no Ozuno, a monk with supernatural abilities capable of conversing with the gods.

An orphan girl, a great monk, and a demon boy. Follow their adventure as they encounter the gods, traveling through even dimension and time.

General of the Three Kingdoms, Kongming had struggled his whole life, facing countless battles that made him into the accomplished strategist he was. So on his deathbed, he wished only to be reborn into a peaceful world...and was sent straight to modern-day party-central, Tokyo! Can even a brilliant strategist like Kongming adapt to the wild beats and even wilder party people?!

Guy's whole class gets summoned to another word, except he's the only who one was transferred to a different one. Just when he gets used to his new life, he gets summoned to another world again, and again.

From their worst encounter comes a story about their ultimate happiness! This romantic comedy explores the ups and downs of a serious relationship.

About a mother who has lost her child and her former classmate. Going through her son's bookshelf, she has convinced herself that her son has reincarnated in another world and wishes to find a method to meet him, enlisting the help of her otaku classmate.

Touya, the strongest player in the game Pandemic World Online, had won so many items that he decided to create an alternate account to store the extra ones. While playing this very game in his second account, he was summoned to another world as a character he made, where the people were merrily expecting a hero. However, when it is known that he doesn't have the title of a hero, he is discarded and replaced by another person. Now, he must survive in an another world with the account he merely used to store his extra items in.

Links:
Original Web Novel: https://ncode.syosetu.com/n9275ei/ (Japanese)

A gate appears in Tokyo's Ginza district sometime in the 21st century. From the gate pours out monsters, knights from middle-age Europe, and other fantasy-like beings, and they kill many of the citizens of Tokyo. This event is known as the Ginza Incident.

The government sends a small group of soldiers from the Japanese Self-Defense Forces to the alternate world beyond the gate. Led by otaku soldier Yōji, they find that the villages in the world are being attacked by a dragon. An elf girl who is a survivor from the dragon's rampage joins the group in their travels across the dangerous new world.

The urban exploration of two teenagers causes them to run into a mysterious "box", which encloses those infected with a virus called "deadite". In that city, there is a teacher named Katsuragi Zakuro. Which hides a secret...