KUZUNO Sekai was transported to a medieval fantasy game-like world (isekai). He was given a game controller with the ability to stop time and a 3 days countdown timer. Now he has to figure out the mechanics of this game world and clear it in time.
Yuuki Wakura comes to a realization after leaving high school - it has been half a decade since his sister vanished during a devastating "Mato disaster." Across Japan, mysterious portals have emerged to a world called "Mato" – a demonic metropolis inhabited by calamitous monsters known as "Shuuki" that threaten mankind's safety. However, one glimmer of hope springs forth – the discovery of a Mato fruit, endowing women with supernatural powers that enable them to battle the Shuuki. This led to the establishment of a new matriarchal government, creating the Anti-Demon Corps, a female organization that relegated males to the bottom of society. Unfortunately for Yuuki, he finds himself unexpectedly thrust into Mato with no means of escape. As the Shuuki loom menacingly, a girl wearing a military uniform comes to his aid, shielding him from harm. As head of the Seventh Unit of the Anti-Demon Corps, Kyouka Uzen is a stalwart and ambitious leader, whose power was deemed an anomaly, stripping her of her peers' trust. In a life-and-death scenario, Kyouka sees this as a chance to test her abilities to their fullest potential, by utilizing Yuuki as her slave to defeat the Shuuki.
Thirteen years ago, a terrible monster known as the “Poison Queen” attacked the Kingdom of Jade. A brave group of adventurers managed to defeat her, but in the process, one of them was struck by a deadly curse. To survive, he was forced to pass it on to his own son. Since birth, Kaim Halsberg has been despised as a cursed child, hated by everyone except his late mother and Tii, a maid who served his family. While his father and twin sister live in the family mansion, Kaim was forced to reside alone in a cabin deep in the forest. But everything changes when a certain “doctor” helps him overcome the curse and awaken his dormant power. Now reborn as the King of Poison, Kaim sets out on a journey to fulfill his one true wish… though he never imagined his poison would have such a peculiar effect on the beautiful women he meets along the way! Original Web Manga
Rintarou Itoshiki, an ordinary high school boy, was supposed to be tending to the famous sword "Muramura" passed down through his family, but before he knows it, he has been transported to another world. Furthermore, the true identity of Muramura is that of a cursed sword that forces the user to ejaculate as many times as the number of enemies defeated...!? To return to his original world and to suppress his overflowing hypersexuality, Rintarou decides to form a harem party and conquer dungeons.
Monster girls are meant for snuggling! The genius game designer Luo Jia had just finished his dating sim, “Passion Continent,” when he was struck by lightning and died on the spot. With the help of a goddess, he was transported into the eroge world he designed—only to find that twenty years had already passed. The world has drastically changed; humans and monsters are now locked in a brutal slaughter, and the happy life of snuggling is a thing of the past. Luo Jia decides to completely rectify this world and transform “Passion Continent” back into the romantic utopia he originally designed. [Original Webtoon](https://manga.bilibili.com/detail/mc39417)
From J-Novel Club: <br> Meet Rio: a callous orphaned boy living in the slums. At only 7 years old, he realizes he’s actually the reincarnation of Haruto Amakawa, a Japanese university student with a tragic past. While still reeling from this shocking epiphany, Rio also comes to learn that he possesses extremely potent magical abilities and uses his new powers to solve the kidnapping case of a little girl. His good deed is acknowledged, and he’s rewarded by being enrolled in a prestigious academy for noble children.
The Arisaka sisters (Hatsune and Kazuki) and the Kagura siblings (Yuuji and Marie) lived next door when they were smaller. So close that they could climb onto each other's verandas from the 2nd floor. They would always play together until one day the Kagura siblings had to move. It's been 10 years and the Kagura siblings are moving back! Yuuji's turned into a pervert and Marie isn't the crybaby she used to be?! — Manga Updates
A utility genius baseball player monopolizes the love of aces.
Lyle Walt is a young noble boy and heir looking forward to the day he can inherit his familys territory. Except around when he was 10 year old, his parents started neglecting him more and more in favour of his little sister, Ceres. On his fifteenth birthday, he is challenged to a duel by his sister to see who will inherit the household and horribly loses, being cast out of his family. Afterwards, he gets treated by the family groundskeepers and receives the family heirloom Gem from him that Lyles grandfather had entrusted to him. From there, he begins an aimless journey with his childhood friend and former fiance, Novem, and the Gem-turned-Jewel that houses the memories, personalities, and Skills of seven of his ancestors.
Five demons launched a war against humanity, destroying more than half of its lands. Among them, the Demon King, who has killed more humans than any other, and a duke's daughter enter into a political marriage, bringing the war to a temporary ceasefire. Cecilia, the duke's daughter, sets out to win over and ensnare the Demon King, hoping to prevent the extinction of humanity. However, the Demon King is hiding a major secret...?
Jason Misawa is a typical high school boy until the night he gets attacked along with Yumi by an unusual creature. He is almost dead when a voice offers him power, and when he awakes he sees that he is a different person. He views the real demonic faces that are masked by the ordinary people, the mark on his hand can overpower the strongest, and he starts to be in peril constantly. Jason wants to know what took place that night, what this power signifies, and the reason why these monsters are manifesting in his life.