Transmigration/Regression/etc (male lead)

A man was reincarnated as Van, a boy of noble birth, who grew up to become a child prodigy through hard work. But when it was discovered that he possessed "production magic," he was immediately relegated to a remote village. However, his magic, which was called useless, turned out to be truly extraordinary, capable of producing anything as long as he had the right ingredients! With the knowledge from his previous life and the overpowered magic, the small, poor village will grow to become into a great city.

The super popular boy-on-boy novel has finally been adapted into a manga! Lute is the son of a tavern owner in a castle town, and he has a secret... when he sheds emotional tears they turn into magic stones, or "gems." One day, the royal knight Advald, a regular patron notorious for being a cheapskate, sees Lute crying outside the tavern and discovers his secret. Now, Advald wants Lute to cry for him to get more gems... by having his way with him between the sheets!!

Han Yu-an, a senior in high school, failed the SAT exams as he accidentally shifted down his answers on the answer sheet. Before him appears a handsome foreigner– no, a demon, who says he could turn back time for Han Yu-an. However, he would have to act as the stand-in for the Demon King… Can Yu-an safely return home after having this abrupt change of lifestyle? "Should I just live however I want? Because until the real Demon King returns, I'm the actual Demon King!"

When Chen Fan transmigrated to the world of martial arts, not only was he abandoned by the system, he was also a cripple without martial spirit. He had no choice but to be the most inferior mortal. But unbeknownst to him, his home was full of divine things; the bath water is a spiritual spring, the person ploughing his land is a dragon prince, the person watering the vegetable fields is the first saint, the person who washes his clothes is an imperial empress. Unknowingly, Chen Fan had gathered many of the continent’s top powerhouses around him and became a landlord who controlled the world.

Updating

There's no tragic hero here!! This soft and fluffy yaoi manga is about a prince and a reincarnated man who becomes a slave. Shuya Suwa (31) was on his way to a drinking party when he helped an old lady to cross the street and got hit by a truck.

Chao Yihun, who could only move in a wheelchair because of an accident, walked into another world and was told that he had a system. As long as the male protagonist went to attack here, he could stay in this world and enjoy the prosperity and wealth with sound limbs. In order to avoid dispersal, Chaoyi followed Qin Que's method of "taking the loopholes" and tried his best to improve the favorability of the "male protagonist", which led to all sorts of dumbfounding situations. He also accidentally discovered the "Original Chaoyi". The secret of death...

Rembrary, the deputy of God loved by all and the holy high priest.When I woke up while fighting against the Demon King who invaded my world, I woke up as an underrated idol in Korea..!Will he be able to safely adjust to the idol life and return to his original world?

It seems I must kill you, Your Grace. Inas has always been Duke Nigel Montesteins most faithful knight. But when Nigel is betrayed and killed by Inas, he wakes up a year before his supposed death. Nigels quick to realize this isn a mere case of time travel however, and the only one who has answers is the man who betrayed him!

Ehan was a stressed-out graduate student who vowed to never attend school again, until he was reborn as the third son of a noble family of mages. But since he isn't the sole heir, he has to make his own path by enrolling at Einrogard, the best magic school in the empire. And although everyone expects much from him, Ehan's time in academia has taught him that getting easy As is the best way to get through school. Despite his lack of ambition, can he graduate as a full-fledged mage?

Computer game programmer, Xander Song spends his days suffering under his abusive boss and cruel coworkers. Tasked with debugging a new video game called “New Realm,” Xander instead transforms the bugs into easter eggs for only the worthiest of players to uncover. One fateful day, reality rewrites itself and merges with “New Realm.” Thrust into a whole new world, Xander must find his way among desperate players while beating dangerous bosses. Will Xander’s knowledge of the game be enough to survive? Or will it be GAME OVER before he knows it?

Yan Qinghe's greatest wish in his life was to seek the road and pursue longevity. However, at the beginning of the career as the emperor teacher, he was struck by thunder and become an actor. Yan Qinghe: Is the span a little too big? He also meet a movie star, he looks exactly the same like the emperor he knew, but he was surrounded by evil spirits and might die soon. Yan Qinghe decided to recommend himself: "I can cure all kind diseases, understand?"

When a supposedly simple reconnaissance mission goes wrong, C-Rank Guide Chung Leehyun finds himself alone in a sort of no-mans-land, with no way to protect himself from the dangerous creatures that roam the area. He’s sure he’s destined for disaster until he runs into Francis Han, an arrogant S-Rank Esper from an opposing faction, also stranded. The two may be enemies from the safety of their respective bases, but it’s clear that out in the wilderness they need one another if they hope to survive. As they begin to work together, one thing becomes certain: their compatibility level is off the charts! It would be foolish to let a partnership like this go to waste, but can they really overcome the animosity between them?

“What was my role in this novel? "I want to know what kind of relationship I had with Chae Seung-yeon." Seung-yeon is possessed by the father of Obsessed Gwang-gong in the impoverished BL novel written by her younger sister. Woo-jin, the father of Main-su, saves Seung-yeon who was on the verge of death. They realize that they are in-laws, but as time passes, their relationship somehow becomes different from the original story...

A pastry chef with a promising future is reborn as the son of a poor lord. The boy's name is Pastry, and he will be the next lord of the territory. The struggles of young Pastry's story begin here as he aims to make people smile with his desserts and create a land flourishing with happiness. The best sweet comes with the best tale. This is a sweet fantasy that takes the royal road to change the world!

Kyungho returns to Earth after 10 years of saving the Spirit Realm from the Demonic Realm. However, the Earth that he returned to is being attacked by the demonic realm just like how the spirit realm was attacked. Will Kyungho, who dreamed of living a normal life with his mother by operating a restaurant, be able to protect Earth?

Updating...

When he opened his eyes one day, Yuyu found that he had entered a strange game world filled with monsters, and if you die, your death is broadcast live. To survive, you must beat the game. Fortunately, Yuyu meets the game’s cold-mannered god, Yunze. Caring more about his life than his image, Yuyu clings to Yunze for help.

I, Vincent, a butler of a count’s daughter, suddenly remembered that the world I'm currently living in is part of an Otome game I’ve played in my past life! On top of that, my beloved lady is the villainess who will end up dying a violent death…?! What the hell! I’ll DEFINITELY save my lady from her bad endings!!! A peppy, isekai comedy, where the butler, Vincent “I Love My Lady” Serenade (a love interest), sprints around snapping all of his dear villainess’ death flags.

Realistic take on a modern doctor in another world treating fantasy creatures without magic or modern equipment

On the day 15-year-old villager Geo was declared an adult, he was given a seemingly useless gift called Home Garden. With his childhood dreams of becoming an adventurer shattered, the disappointed Geo heads home and activates his gift in his desolate yard... And in an instant, vibrant, high-quality crops sprout! The surprises keep coming as he grows meat-bearing trees and can even create powerful golems! Could this souped-up home garden actually be stronger than any skill in the world?! Now begins his delightful slow-living adventure with his ditzy yet adorable little sister and two interesting childhood friends!