From MangaPlaza website: Aya Zaizen, 31, works at a famous Japanese trading company. There, she serves as assistant to executive Keiichiro Kijo. Though Aya's earned the trust of harsh and hard-headed Keiichiro, she's never been in love before and considers quitting to pursue that experience instead. Keiichiro doesn't agree, and after interrogating Aya, suggests he'll be her lover instead. The spicy, long-awaited tale of a domineering director and his virginal assistant, now in manga format!
Ji Yul-moo, a freshman student with thick glasses and baggy clothes, who seems to know nothing but study. Unlike her innocent looks, she always carried a green notebook that full of wild stories containing her perverted desires. Then one day, Jeongwook, a senior that she always envies, discovers her lewd notebook... "I really wanted to meet you, Ji Yulmoo. I was really impressed by this. The story you wrote. Shall we talk?" Rather than criticizing Yulmoo, Jeongwook invites her to his X-game club... Original Webtoon: Lezhin, Bomtoon Official Translations: Japanese
Violet Everdeen is known as the worst magician in the academy and she is an a illegitimate child from a noble family. Her home life and school life are awful. Suddenly, she gains the power to see visions of the future. The future seen, is a villainess, and an excution. Knowing this, she makes plans to avoid her death and the villainess label. Original Novel: Naver Series Original Webtoon: KakaoPage, Daum Official Translations: Japanese
This marriage holds our life and death. “Since you’re going to die anyway, why not die sooner? Hmm? If only you die, everyone else will be happy.” They stole everything from me, used it to fill their own bellies, and even exploited my death. Maybe it was because of that burning grudge? With the chance for revenge, I returned from death. This time, I won’t die foolishly after being used. I vowed to place this second life on the altar of revenge. So I decided to marry the man they loathe the most, to save both him and myself—and to ignite the beginning of my revenge. But then— “You look… familiar.” When I met him up close, he resembled my old friend far too much. Though his tastes were entirely different. “Do you really think the rumors about me being a cannibal are just rumors?” Perhaps choosing this man was a mistake. “Marquis… will you devour me?”
After graduating from the academy, Lien was living a perfectly ordinary life when, one day, sudden news reached her. Dian—the sole heir to the kingdom’s only dukedom and her childhood friend—had fallen ill with a mysterious disease. In search of a way to cure him, an oracle is brought forth from the Temple of Healing, but it reads: "For fifteen days, at every sunrise and sunset, he must partake of a maiden’s milk." "Is that even possible? Can a maiden produce milk?" "There is a magical potion; if she takes it, it becomes possible." Wait, does that mean Dian has to... directly suckle from another woman's breast? What is this? Why does my chest feel so tight? "Are they looking for a volunteer—" "I’ll do it. Um.. but.. you know. I don't have any experience." **Original Webtoon:** [Ridibooks](https://ridibooks.com/books/2404037774)
After reincarnating into the world of a video game, our protagonist realizes he has become Diablo, the most universally despised noble in existence. His impending fate? A gruesome and brutal revenge enacted by the game's very own heroines. Determined to atone for the original Diablo's heinous misdeeds, he resolves to save the women he once wronged. By overcoming harrowing trials and pushing past his absolute limits, he will claim the ultimate power and rewrite his tragic destiny! [Gangan Online](https://www.ganganonline.com/title/2538)
Machino and her friends are hard at work on their occult research again today. But one day, the student council tells them that their club is being disbanded... Determined to save their club, they’re setting out on a mission towards revival! Eating snacks, chatting, and summoning demons whenever they have time. A laid-back, heartwarming comedy about an occult research club!
Moon Garam is a fox demon who must obtain yang energy from humans. Thanks to her trashy ex-boyfriends (?), Garam has been unable to consume 'yang energy' for a while, and strange symptoms caused by hunger are beginning to appear in her body. At that moment, her eyes fall upon her childhood friend, Han Pureum, who looks fit and delicious "How about it? You want to try it with a fox too, right?"
"I know everything about the dungeon, and I'm gonna turn my life around!" A bullied virgin whose life has hit rock bottom. But when it comes to his knowledge of the dungeon, he's number one in the world. His name is Saeki Kenichi, a high school student. At 16, his magic finally awakens! Kenichi becomes the 'Seeker' he's always dreamed of and heads straight for Dungeon Island—a lawless zone of pleasure and violence!! Using the knowledge he's stockpiled, he'll mow down the strongest monsters and 'release his magic' (have s*x) with the hottest girls!? Use your knowledge to dominate and take it all!!
https://mechacomic.jp/books/263645
https://www.cmoa.jp/title/333853/