The middle school girl Mada Ooma was the Demon Lord in her previous life. She (he) has but one lingering regret. And that was the fact she wasn’t able to confess her feelings to Riri, her attendant, whom she loved in her previous life. A love that would never come true... or so she thought, when Riri somehow appeared in front of her eyes in her new life...!? A bright and pure romantic comedy crossing past and present lives about a former Demon Lord who’s being taken for a ride by the one she loves!

Shocked after Yuki Himemura found out that the club senpai he was crushing on got a boyfriend, he decided to become a VTuber—something both he and his senpai have always liked—and used his savings to assemble his equipment. He gets his virtual character designed only to discover that it's a 3D model of a cute girl and, in the process, unintentionally ends up portraying one! Not only that but the person who designed and rigged his model and his favorite VTubers are starting to take a liking to him...?

(Synopsis via Novel Updates)

Seeing it brings misfortune; defiling it brings a curse? Introducing a new era of strangeness, abandoning seriousness!

On a stormy day, a landslide destroys a fence, and siblings who ventured into a long-prohibited area encounter a terrifyingly bizarre creature...
"I'm a curse god, you know!? Don't you think anything of this grotesque form?!?"
The unflappable siblings, rather than being scared, casually call the creature "Dara-San" and grow fond of it!?

Seemingly scary but not at all! A new era of occult comedy that leaves seriousness behind.

Cute but dumb as hell... and somehow still the strongest! ...Reincarnated as an ostrich beastkin with innate physical ability!?

With intelligence from my previous life, I lead a flock through a monster-filled hellscape just to stay alive... One day, after saving a party of human adventurers from certain doom, I finally made contact with the civilized world I had dreamed of!!! Unlike the uncommunicative ostrich-kin I'm used to, I'm overjoyed to meet people I can actually talk to... However...!

"Haruka Yamagishi" is a guy who has no friends or family and just goes back and forth between work and home. One day, when he wakes up, he finds himself in a different world. And for some reason, he's turned into a beautiful dark elf! Now, Haruka has inexhaustible magic power, a sturdy body, and a new life where she can do anything... However, through the friends she met and her activities as an adventurer, changes slowly began to take place. The guy who gave up on life in this world begins to feel what it's like to live. Although there are some traps and other events, it's a touching adventure story!

[Source: Manga updates]

My name's Karina—or at least, it is now! I used to be a nondescript, run-of-the-mill Japanese salaryman until I was whisked away to a divine realm where the Goddess of Time and Space told me I'd be living a new life in a new world—and as a girl, since apparently she prefers it that way. First she wants me to beat some final boss she has a grudge against, then she takes control of my body to show me how to use my new spatial magic powers in a tutorial fight... Wait, isn't that the final boss I'm supposed to beat?! Less than in a minute into the tutorial and he's dead!? And now she says the world's my oyster. Seriously!?

Official English Light Novel: https://j-novel.club/series/knock-yourself-out-the-goddess-beat-the-final-boss-in-the-tutorial-so-now-i-m-free-to-do-whatever

A popular guy that's secretly interested in cosmetics asks to practice makeup on his dull childhood friend and he ends up looking cute?!

Links:
Author's Twitter: https://twitter.com/azusa_banjo
Author's Pixiv: https://www.pixiv.net/en/users/5279612

A hitman and a marriage swindler set out on the world’s most grueling battle for marriage! Gero is a young man from a clan of hitmen, which has been in existence for hundreds of years. As someone who’s never gone to school and lived his life dealing in the dark side of the business, he considers himself to have “no prospects with women” and marriage as “something not for him.” However, one day, in fear that their lineage would dissolve, his clan warns Gero that if he doesn’t marry and produce an heir, they would have no choice but to…force his little sister into doing “that.” Driven to his wits’ end, Gero asks the target of his work, a marriage swindler, to…

"I also wanted to be... the strongest in the world."

An Arch Mage who died without fulfilling his dream wakes up to finds himself being reincarnated as a member of the imperial family. And what's more is that his new body has a talent for close-quarters combat! This time he holds hope that he finally might be able to fulfill his desire of being world's strongest...

But after reincarnating his new name is Evangeline. Indeed, he had become a girl.
In her princess life where muscle training and fighting are forbidden, Eva brings dumbbells to her room and wields a sword! And before long, she becomes the strongest!?

A fantasy about a tomboy princess' rise to the top!

Kang Ji-hoon, an ordinary high school student who died in a painful accident, finds out in the underworld that he is actually a ‘Water Spirit King mistakenly born as a human’. “Making water spirits? How do you do that?” The adventures of Elqueeness, the Water Spirit King who was mistakenly born as a human!

Uichiro, a junior high school boy, harbors a secret he cannot share with his childhood friend, Tama-chan. He has been cross-dressing for her because she has a phobia of men. This is a thrilling yet agonizing comedy about a boy who cross-dresses for the girl he loves!

An old school yakuza, Nagamasa Ryumatsu, ended up losing his life due to certain circumstances. But, when he awakened to a strange sort of scenery he had never seen before, he found that he had somehow changed into a beautiful girl!?

Self Published WebManga Presented by Grinp-Circle

A TS Slice of Life Comedy about a brother who was transformed into a girl by his little sister strange drugs.

After two years of being dormant inside Tsutomu Senkawa, an accidental encounter with their old nemesis violently wakes Birdy up. With Birdy kicking evil's ass once again, the dark secrets of the experiments conducted by the "Agni" corporation are slowly revealed. They seem to be dabbling with human body enhancement, creating what they call "beast men," to combat the alien invasions related to Birdy.

About a guy who reluctantly transforms into a magical girl to fight monsters.

As the master of the School of Unholy Arts and as the undefeated Unmasked Demon, MookHyang unfortunately falls to a strange fantasy world by the magic of his enemies (School of Blood Arts). In the new world of elf, sorcerer, knight, and dragon, MookHyang’s adventure of finding a way back to his old world (Murim) unfolds.

I, a plump Onee, walked around drinking in Ni-chōme, got drunk, and after that met with an accident and scattered my life…… was supposed to have happened. But you see, when I woke up, I had reincarnated into the beautiful duke’s daughter Elizabeth~!

Eh? But the role is the villainess, you say? A joke, surely!

Rather than that, isn’t it about using this beauty to make a lover who is a gorimacho of my taste! Seriously!

While putting tsukkomi into this too-loose world and rampaging with knowledge cheat, Elizabeth is strongly approached by a slender ikemen prince who is the complete opposite of what the person herself desires-

Rin's village getting attacked by bandits doesn't keep her down in the dumps for long! Picking up a sword housing an extraordinary pervert… I mean hero, Siegfried, she sets off on a journey of many bouts with various degenerat… ahem, heroes!

High school student Boji Nichiro is isolated from the rest of the world due to fierce bullying. One day, however, the world is transformed by the "dungeonisation" phenomenon! In the midst of the chaos, Nichiro awakens the unique skill "Shop". It was an out-of-the-box skill that allowed him to buy everything from food and daily necessities to unrealistic items! The start of a painful and "wacky" modern fantasy from "Shosetsu-kaerou"!

In a world where the demon lord had been defeated and peace had arrived, Rex the magical doctor ran a clinic. But the patients brought in were all beyond saving compared to the world itself, people who'd XXX slimes or stuck their peens into man-eaters!? An otherworld perverted medical comedy begins!!