Hyeonseok Choi finally becomes the undisputed heavyweight MMA champion of the world, but gets hit by a truck, and dies.

A fairy, Rahel, appears and convinces him to fight as a hero in the afterlife, but accidentally sends him to the side of the demons.

Stuck in the demon world, he sweet talks his way into positions of power, but slowly discovers this battle between good and evil isn't as clearcut as it seems.

"I can see your number. The number of people you will kill in the future."

If he kills before they kill, the murder will not occur. Serial killer Number punishes the 'Destined Murderers' one at a time under that resolution. Could his wish to create a world without murder through murder ever be accomplished?

Elric Melvinger.
The sole heir of the prestigious magic family.
Though he possessed innate talent, he had too much talent, and as such, could not learn magic. However, he then received a blessing left by his ancestors!

[Eat demons.]
[Swallow demons.]
[Drink demons.]

[Continue to keep accumulating demons within yourself, and achieve new magic!]

Reach high.

Reach a height so high that no one will ever reach me.

In middle school, Konoha Satou dreamed of escaping into a world like that of Dark History, a romantic fantasy novel she wrote telling the story of the count's daughter Konoha Magnolia and the knight she falls in love with. Years later, her mother rediscovers that novel - only for Konoha to get hit in a traffic accident and die!

When she opens her eyes, she finds herself in the world of her own creation as the heroine's younger sister, Iana Magnolia. Somehow, she's been reborn as the character she created to be the greatest villainess of all time?!

Ghost-seeing School Boys oneshot included in volume 1 as chapter 3.5

If you're reincarnated in another world, you will be naked and alone in the forest. The only things you can rely on without magic or cheats is your wits and fists!

Author's Twitter: @yazin_uhouho: https://twitter.com/yazin_uhouho
Web Novel Raw: https://ncode.syosetu.com/n5771ei/
Alternate Raw: NicoNico: http://seiga.nicovideo.jp/comic/41841

Asakusa Midori wants to create an anime, but she's too disheartened to make that first step by herself. But by pure chance, she meets Mizusaki Tsubame, an up-and-coming socialite secretly dreaming of becoming an animator. Together with Midori's money-loving best friend Kanamori Sayaka, the energetic trio slowly work towards making their "ultimate world" a reality!

For as long as he remembers, Komi has been shorter than his fellow classmates. He always felt inferior as a result, until he met Obinata - a girl who is head and shoulders above him.

Yes, Asumi Obinata is tall. She’s imposing. But she’s also Komi Amane’s girlfriend. And these two are the happiest kids in the world.

The super-popular oneshot has been expanded to a full series here!

The first unique romantic comedy manga in the history of CoroCoro! The slime he created transformed into a girl!? Kotarou, a young boy, is constantly pushed around by Puniru's freewheeling behavior. It's a fun and exciting daily life!

“The Hero defeated the Demon King in the war of men against demons…” Those kinds of stories are a thing of the past. Nowadays, adventurers, demons, Heroes, Demon Kings, and so on are all occupations that no longer involve putting one’s life on the line. Peace has returned to the world, and dungeon exploration has now become a form of entertainment. Adventurers and monsters now all fight using clones they’ve created with magic in an extremely popular form of dungeon clearing where nobody dies. The footage of the dungeon getting cleared gets broadcasted all across the continent, and I’m a member of a Hero’s party that was ranked the 4th most popular in the world… but not anymore. Parties had a limitation of 5 members, and I was told that an unpopular job like Black Sorcerer would only get in the way of getting to 3rd place or beyond.

Now that I became unemployed, I was forced to find another party but I just couldn’t find one. One day, I encountered a beautiful blonde red-eyed woman who told me she had a job for me. After being so touched from having someone recognize my abilities far more than my past comrades, I ended up agreeing to take an interview without asking for the details. When I arrived at my destination, I was at the world’s hardest dungeon where no party has ever reached the final area, the Demon King Castle, where the Big Four and the Demon King were waiting for me. This is the story of a Black Sorcerer that was kicked out of a Hero’s party and joined the side of the Demon King Army to repel the Heroes. (Source: Novelupdates)

Or
Please read the title again.

Artist's Twitter (NSFW): https://twitter.com/kana_kkn
Orignal webnovel: https://ncode.syosetu.com/n4836fm/

The infamous leader of the assassins known as the Shadows, Raon, had lived his entire life as a dog on a leash.

However, through a twist of fate, he obtained a new life—as the grandson of Glenn Zieghart, the Destructive King of the North!

He prepares to use the Ring of Fire he still possesses as an infant to begin cultivating when he's diagnosed with the Curse of Frost.

With the odds stacked against him, will he be able to finally stand on his own feet and live life by his own will, to become the strongest swordsman on the continent?

“I will slay anyone standing in my way of revenge…
even if it is a god.”

This talks about Rimuru and his friends spending their free time doing something fun together. A spin-off from the main series "That Time I Got Reincarnated as a Slime"

Hana Tabata is a lonely and unpopular high school girl with negative thoughts. Early morning in the classroom when she was pretending to be a manga heroine, the class's good-looking Yosuke accidentally saw her...!? This love, you will definitely want to support it! Masochistic system unpopular girl comedy!

Murasaki has the power to see the future of the person she touches. As the landlord's daughter, she has to chase after Shijima Banri for rent every month. Every time, the poor author Shijima promises her that he'll pay rent as soon as he gets published and gets paid. Murasaki quietly supports his work, because she can see that Shijima is the person she is fated to marry.

Mori, a child found by a rescue team in an abandoned house, wakes up in a shelter. While adapting to an unfamiliar life, one day, he begins to be looked after with unconditional love from a mysterious sponsor... And then Mori learns about the existence of a "mom" when a close friend leaves with hers. The child starts to wonder about the sponsor: "Could this person... be my mom?"
This is the story of Mori's long and challenging journey to find his mom.

After the events of Baki-Dou, the famous Kenpo master Retsu Kaioh wakes up in a new world unknown to him.

Note: This is the official entry, not to be confused with the Doujinshi from Twitter user @sakuramankiti. As of now there is no official cover so the December 2020 issue of Monthly Shonen Champion is being used instead.

The power harassment from Alfine ー his girlfriend and childhood friend ー who is the same age, grew up with him, and became adventurers together, is painful. She is a peerless beauty, a person with the title "Sword Master" and called the "Flawless Sword Goddess," a capable woman with achievements recognized by the kingdom and rewarded with appointment as a knight and became a noble. On the other hand, he is treated as that capable woman, Alfine’s accessory, gets abusive language hurled at him by her, and suffers from her harsh power harassment and insults to him as an adventurer, resulting in him losing his dignity as a man and as a person He has resigned himself to spending his daily life in the position of a lover-caretaker.

However, changes came to that daily life. Alfine, who becomes busy as the kingdom's knight, often is unable to take part in adventures. As a result, the times he takes requests alone increases, and he is able to regain his lost dignity. Then he becomes aware of the abnormality of his circumstances. So, to regain himself, he chooses to leave her and her repeated power harassment behind. In addition to all of the equipment he has received until then, he returns his sword, one of a pair they had exchanged when they became adventurers. Declaring that they are over, he leaves the place quickly.

"From now on, I will change my name and appearance and live freely."

As soon as he decides that, everything goes well. When he realizes, he is praised by the people around him and is the greatest adventurer on the frontier. What's more, he got a proposal to marry the frontier lord’s daughter from a female adventurer.

Peleliu - Rakuen no Guernica follows the daily lives of Japanese soldiers taking part in the Battle of Peleliu during World War II: a high-casualty, months-long campaign. The main character, Tamaru, dreams of returning home to become a mangaka, and sees their island outpost as a wild paradise that can one day be used as a setting for one of his stories. Most of his comrades, however, are prepared for the more realistic scenario -- that they will not be leaving Peleliu alive.

The popular AV actress Miyama Yuri has suddenly announced her retirement. At the same time, Shikishima, a convenience store manager and her biggest fan, finds himself at a loss, unsure of how to move forward without her in the industry. Amidst this, a girl named Tamagawa-san shows up, applying for a job at Shikishima's store. Coincidentally, she bears a striking resemblance to Miyama Yuri. This uncanny similarity leaves Shikishima torn. Should he ask Tamagawa-san if she's ever appeared in AVs? But in today's politically sensitive climate, such a question feels risky... Who is Tamagawa-san really?

“Please teach us naughty things.” One day, Itsuki is transported to another world, where he is confronted by sisters who serve the goddess. In order to return to the real world, he must give them practical sex education!

Sakra, the last surviving princess of a fallen kingdom, is being hunted down for the power of Ambrosia she possesses - the ability to grant divine strength, but only to a human. With no human companion, she decides to summon one from another world in a desperate attempt to find a knight to protect her, but the man who answers her call is less than what she had hoped for.