You can't leave this island until you've killed 100 people. The most deadly survival game begins on a solitary island where desires swirl and only the strongest survive!

One day when average middle schooler Koji Miyahara came home from school, he found a naked girl sleeping in his bed. To his surprise, she was a ghost, and her name was Alice Fujinomiya! Alice can only be seen by other people when Koji's nearby, so she decides to become his girlfriend.

From DrCoke at MangaHelpers:
He has never been the type to stand out in the class. Kurihara Yuzuru has lived life by avoiding entering the lives of others, staying to himself. The story begins where he has to go to a whole new school, which means new classmates. He lacks any confidence to make new friends, so the fear of rejection drives him into a wish he never thought he would make. This single wish leads to a first day of class he would never forget. Yuzuru will have to make choices that will significantly alter others' lives, choices he could never make in the past.

Crow, the loyal butler of a villainess, realizes through a series of chance events that he has in fact been reincarnated into another world.

With a new perspective on life, he realizes just how badly he's been treated by this haughty, egotistical and prideful noble lady he calls his mistress until now, and boils with rage at the injustice.

However, after deciding to take revenge on her in a risque way, he comes to realize that she's a lot easier than she looks...

This is a story of how a reincarnated butler tames his villainous mistress in lustful ways, but ends up making her truly happy.

An after school romance of two girls.

A 5-part one-shot about a beautiful girl flirting with her self-proclaimed boyfriend.

Hiromichi Satou has been single his whole life, but, he recently got a girlfriend named Saikawa Haruka, and they have been dating for a month. His father remarries, and he gets a new step-sister Saikawa Shigure, the identical twin of Haruka.

Sato and Shigure agree to keep their step-sibling relationship a secret from everyone, and Haruka. How will the story unfold?

Sho and his friend, Tetsuro, stumble upon a strange orb-like mechanism, the Guyver Unit, in the woods. It physically bonds with Sho and turns him into the alien soldier, Guyver. His mission is to protect the Guyver Unit from the Japanese corporation known as Chronos. They are after it and two other units just like it. To retrieve the object, they send out vicious monsters known as Zoanoids. So no one is safe in Sho's life; not even himself.

After saving the world, the strongest hero who has no place to go anywhere · Leo. Power that is too strong can not enter the peaceful world …… Such a place of employment where he arrived – the former enemy, the Magus army! The 2nd Kakuyomukon.

Worldly knowledge and artistic refinement! Hinata-chan is on a completely different level to your average toddler. But she has a secret... that she's the reincarnation of an 88 year old grandma, with her memories intact! Enjoying green tea on the veranda, a taste for pickles, and an old-fashioned dialect! Why has she been reincarnated? A comedy full of old-wives wisdom.

The story is set in a Japan that is ravaged by plague-like rust, and details the journey of the strongest mushroom hunter Bisco Akaboshi and young doctor Milo Nekoyanagi and their search for the legendary medicinal mushroom “Sabikui”, believed to be the cure for the rust.

An infamous yankee, Kurokawa Morio meets a partially blind girl, Akaza Yukiko.

Wimpy Sena Kobayakawa has been running away from bullies all his life. But when the football gear comes on, things change--Sena's speed and uncanny ability to elude big bullies just might give him what it takes to become a great high school football hero! Enjoy all the bone-crushing action and slapstick comedy that this heartwarming coming-of-age story has to offer.

Henry Morris was an 8-circled wizard who was a legend- one of the founding fathers who helped his friend become the king of a unified empire. After the son took over the throne, Henry was executed with the false accusation of leading a rebellion against the empire. He then wakes up in the body of young Henry Morris, the eldest of a baron family, who also happened to have the same name. Henry turns his life around by again relearning magic and also swordsmanship in order to become the first magic swordsman, all for the sake of revenge.

Official serialisation of the Twitter series Boku no Oku-san Chotto Kowai.

It follows the story of the parents of Shimizu-kun from Sotodura Danshi no Shimizu-kun.

An adolescent ghost story that invites college student's "desire". Drinking parties, looking for clubs, romance... Chigarashi Mahina, a freshman who is busy with her flowery college life, is haunted one night by ghosts after entering an abandoned building. Nights after nights, she had nightmares of her getting raped. She then seeks help from a specialist on campus, Makube Kaoru. That was the beginning of a college life filled with desire and fear...

Good for nothing Yoo Hobin is always bullied by students who feel superior to him, yet he ignores them as his life is all too difficult already. However, an unintentional incident ends up turning his life around. He becomes famous through a viral video that he didn't even intend to upload! Everything is perfect! He instantly becomes famous and starts earning money from the accidental video he uploaded.

But since it was unintentional, he is unable to reproduce it. Fueled by the potential money to be made and the sudden change of popularity, he then plans to make more captivating videos that people will find interesting and help him gather more subscribers… However, he cannot accomplish any of that unless he learns HOW TO FIGHT.

One day, four school friends, cross the line as they are interested to find out more about sex. Once you spark that flame though it is hard to go back and the bodies and minds of these four people begin to be intricately entwined. This is an adaptation of the "Karami Zakari" best-selling adult manga with over 1 million downloads which is reborn as a Seinen manga!

From Population GO:
The manga adaptation of Gundam 0083. Years after the One Year War ended, in hopes of resurrecting the Principality of Zeon forces, Anavel Gato (also known as the "Nightmare of Solomon") steals a Gundam Unit 02 from the Earth Federation Forces. In the heat of battle Kou Uraki enters Unit 01 to confront Gato.

Adele was adopted by the duke in order to replace his dead daughter who died from a rare disease. She worked her entire life so she would be loved, but as soon as her younger sister was born, she was abandoned and set to be married off. On the journey toward her marriage, she was assassinated by mysterious enemies.

"…Is this a dream?"

But when she opened her eyes, she had returned to three years in the past! Since she will be abandoned when her younger sister is born, she tries to live life the way she wants, but things keep going wrong.

"Weren't you interested in me?"

And a mysterious knight in black keeps pursuing her…
Links:
Promotional Video: https://youtu.be/klyrIC4ORo4
Official Indonesian Translation: https://kakaopage.co.id/content/Campakkan-Aku/3359
Official Japanese Translation: https://piccoma.com/web/product/33704