“I just love you sooooooo much, Senpai!”

My name is Tomoki Yuuki, a second-year high school student. I’d say I’m a fairly normal student, save for the fact that everyone avoids me like the plague because I apparently look like I’m out for blood. Ike Haruma is the only one who doesn’t steer clear of me. He’s your typical ‘perfect guy’ in every sense; the protagonist with no real flaws that you see in any given story.

Life at school was continuing on as usual… until one day, Haruma’s super popular little sister confesses to me out of the blue?! Though she later clarifies that her feelings toward me are anything but romantic and that she has an ulterior motive, I end up accepting my new role as ‘fake boyfriend’ as a favor to Haruma.

Believe it or not, the moment I start going out with her, Haruma’s idol-tier childhood friend and my super hot teacher get involved with me too!

Wait a minute. This can’t be a dream rom-com scenario setting itself up for me, can it?! I mean, there’s no way a side character like me could be popular, right?

Shuichi Kagaya isn't human. He has an unnatural sense of smell, and can transform into an incredibly powerful beast... of sorts. He does all he can to avoid standing out and being discovered, but no good deed goes unpunished, and his decision to use his power to save a girl spells the end for his quiet life.

During the anti-cataclysm period, the monk Chen Fanyu fell into the catastrophe of the day, but he dreamed of returning to the earth's young age in five hundred years. In the last life, I was on the top of the universe, overlooking the world, but no one was accompanied. This world is only willing to live with the right person. After 500 years, the immortal reborn and returned to the city, to make up for the regret and play the story of pretending to be the weak.

The near future, in a quiet seaside town. Yoshioka, who had recently lost his wife, just wants to spend the rest of his days in peace. However, Yoshioka's children, worried about their father's health, sent a housekeeping robot to help him. Yoshioka's quiet life is now changing.

After falling into the gap between worlds, I gained “the ability to identify something’s status” for the cost of a single limitation. However, other than this skill I was completely ordinary. All I could do after landing in a strange world, was see through the status of things and use that information for my own growth.

One day, after being assaulted by enemies, a lone figure appeared and saved my life. What’s more, that person had an incredible “secret”.

Shiraishi is a plain boy who is two hairs short from being invisible to his classmates and peers; in other words a "mob" character. Cue Kubo, his beautiful next-seat neighbor who always notices him and playfully experiments on him to gauge just how "invisible" he really is... and then she declares herself his "heroine".

In an unexpected turn of events, dull high school student Hiro Yuuki obtains the full dive role-playing game Kiwame Quest. Created by the best of technology, the game claims to take "reality to its extremes," from stunning graphics, NPCs' behavior, to the scent of vegetation, and even the sensation of wind brushing against the skin—everything was the result of an ultimate workmanship.

Except, the game is a little too realistic and messy to clear. Kiwame Quest features over ten quadrillion flags and reflects the players' real-life physical abilities in the game. Being hit in the game also hurts in real life and slash wounds take days to heal.

The only reward here is the sense of accomplishment. Conquer the most stressful game in history that can't be played casually!

An ordinary middle school student works at the school infirmary with the crazy otaku school nurse.

“Iron Maiden” is an instrument of torture modelled after Mother Mary's form. The interior is full of long nails, and people who are enclosed in it would be pierced to death. But the “Iron Maiden” that exists nowadays is simply a counterfeit made by us based off of old tales. The “maiden” who possesses a gentle, loving face as well as a violent “body”... Did the “Iron Maiden” really exist in the past?

Kushima has just started going out with his classmate Yuzugawa Kururi. Yuzukawa is not good at expressing her emotions, so she wishes Kushima would be more empathetic to her feelings. This is a new kind of romantic comedy about two people who are "already dating" instead of "not together yet."

The stoy of an elf queen who got isekai'd from her world into our world. Her name is Lady Elfinn, our titular queen.
And a sweet boy who believes in the Elf supremacy. His name is Isuzu.
Their fates clash after Isuzu gets assigned to take care of Elfinn, and help her accomplish her task: To become the queen of the human world and to guide us into a better future.
In order to help her with their final goal he proposes...

To master the old ways of the S&M to conquer the world!?
What awaits them in the future!!??

Joseph, the successor of the Great Demon Lord, became a teacher in the Wizarding Academy with the help of the demon princess Lilith who has the power of "love" that helps him to successfully ascend the throne, but the reason is to form a "sexual love bond" with some of his students!?

From Viz:

What do you do when a team of evil superpowered wrestlers from another planet threatens the health and safety of the Earth? Organize a team of GOOD superpowered wrestlers, of course! Kid Muscle, the son of legendary wrestler King Muscle, rockets to Earth and finds an evil wrestling gang called the DMP tearing the place apart. The punks on the DMP are the weirdest, nastiest, most outlandishly powerful musclebound freaks the galaxy has ever known. Kid Muscle's only hope: form a team that's even wilder. Lazy and cowardly, the Kid sure doesn't look like the universe's last great hope, but when something upsets him -like, say, EVIL - he busts out in muscles just like his old man! The only possible result is earthshaking, bodyslamming, ultimate-powered action that sends our entire planet sailing over the top rope!

Itsuki is an assistant at the Folklore Research Institute and is always caught in mysterious cases as he pursues his studies. Follow along as he tries to unlock these mysteries that are tangled with old beliefs and local customs using his keen professional intelligence. (JDorama.com)

Each chapter details a girl NTR /cheating on her boyfriend.

His father is doing time for murder. His brother was arrested for murder. The second son of the family, Ryoga Ishida, is under suspicion of being involved with his brother. Under his fathers order he takes on his boxing pro test.

Onizuka is a prisoner. For reasons that he only knows, he tells the story himself of what happened between him and Class G (which is basically an idol class), expect many troubles, adventures and of course many hilarious moments.

GTO - Paradise Lost is a sequel to GTO and Onizuka is now 24 years old as well.

In a future not too far away, androids that look exactly like humans begin to spread across the world. The android production company SA Corp. produced Giftia, a new kind of android that has the most amount of emotion and human-like qualities out of any other model ever seen. However, due to problems in technology, the androids have a service life, and once they pass that, it gets pretty bad. For this reason, SA Corp. creates a terminal service in order to retrieve Giftia that have gone past their service life. A new employee at the terminal service named Tsukasa Mizugaki forms a team with the Giftia Isla to retrieve the other androids.

This series features Michiru Kinushima as the protagonist.

Satou Shiki, a university student, was suddenly stabbed by a slasher only to be reincarnated in Labyrinth City. In this other world, he who has awakened to [Appraisal] and [Healing Magic] does a lot of “things”.

Gordon is an unsociable middle-aged man driving his food truck through a world buried in sand. One day, he meets a girl named Arisa sleeping stark naked in the middle of the desert. While Arisa wolfs down any and all food she can fit in her mouth, a mysterious armed group seems to be pursuing her, too.