Nishimoto Haruki is a 21 year old male and a newly recruited police officer. However, all his past assignments involved him dressing up as a girl in order to solve the crime. It seems that he has the feminine features that make him the only one suitable for the position. However, things get even crazier when he is assigned to be in the all female police squad surrounded by gorgeous women. He has to protect his secret that he’s actually a man but Haruki is already having a hard time controlling his urges.

One day, it was a herd of ants, and another day, it was a large dinosaur. This was the last reincarnation of a being that had experienced tens of thousands of reincarnations and lives.
He was born as a human with the power of every single lifeform he had ever been.
Why did he have such an ability? Lee Jain finally came to understand.
“I exist to eradicate mankind.”

By the power of the goddess, I was reincarnated in the world of VRMMORPG "Valkyria Chronicle".
Apparently, in the real world, he died from overwork due to his life as a company slave.
I don't have the original body ... If so, I will live faithfully to my desires, create a dungeon with the female character I like, and have a carefree (innocent) sex life ... I will live a good life!

(I hope the former description wasn't from the translator for this series, because you know it was 100% Rewritten.)

The special discipleship of Moorim's best assassin, "Gwi-Myeon-Dok," will begin.

Meet Teragane Haruto, your typical high school student without any aspirations or wishes of his own. He is the kind of guy that prefers to be with his friends fooling around and playing all day instead of worrying about his future, until a change in his life suddenly burned down his normal every day life to cinders. An eyed pillar sprung out from the earth, with the intent of killing any human that came into its gaze like it was a mindless murderer.

Why is this happening? And what could have brought this amount of hatred unto human kind?

The terrible variation virus that suddenly hit Seoul one day! Yeon-woo who has been on a school trip to Seoul, is so singing about the idea that he can get acquainted with the same class so-yeon, who was usually unrequited love. Unidentified cells appeared in front of The Yeon-woo's Class while sightseeing in Seoul. The math trips of classmates like the actors turn into hell because of the cells that turn the infected into a ferocious figure when they come into contact...! Can Yeon-woo escape Seoul safely?

Rygart Arrow is the only one in his world who lacks the inherent ability to power up quartz, the energy source that makes all of the machines run. Nevertheless, he's pretty well connected. The King and Queen of his country of Krisna happen to be old college friends. But so is Zess, the guy who is leading the army of a neighboring kingdom in an attack on Krisna.
How did it comes to this? There's little time to ponder the implications as an army in giant, mechanized battle suits attacks. Arrow just feels like he's in the way - until he comes across a powerful, ancient mech that no one has yet to be able to figure out how to run. But his natural affinity for the suit's operating mechanism may just turn Arrow into the most important player of all.

Yuika Kagami is a 15 year old schoolgirl that is in the search of thrilling and exciting experiences. She ends up meeting with her school's "Game Club" and realizes that she might be able to fullfill her youth by driving a GTR R34 just as the one her father used to race with.

‘Escort’, refers to paid warriors, their targets of protection, are also referred to targets that are wanted by the government. On the eve of civil chaos during the last years of Sui dynasty, with the rise of a reign of terror around the country, various peoples’ feelings of grudge and animosity develop…

Takina Inoue, a high school girl working as a member of an all-female taskforce of assassins and spies known as "Lycoris" dispatched to eliminate criminals and terrorists in Tokyo, is sanctioned by her superiors at the DA agency for disobeying orders in order to save a colleague. She is transferred to work with the elite Lycoris agent Chisato Nishikigi at one of the agency's branches, which operates under the cover of a cafe, called "LycoReco".

A wild dog named Weed happens to hear that he is the son of Gin, the great leader of Ohu, who lead the dogs of Ohu to victory in a fight against the monstrous bear Akakabuto. Weed wants to find his father no matter of what. On his search, Weed meets many friends and enemies.

Side stories focusing on the Crypters.

I am an S ranked adventurer and for certain reasons am traveling with a certain alchemist. However, this alchemist is quite strange. In his spare time, he can make the highest grade potion called an elixir, and can complete a holy sword overnight. I want him to remember to be responsible. I want him to watch his health… stop drinking elixirs like they’re energy drinks!

This is the story of the weird alchemist who doesn’t know restraint and the adventurer who tags along with him.

The Yoshinomiya Municipal High School 2nd year students embarked on what they'd hoped was an educational trip with their friends and away from family but it was not meant to be... Their ship was hit by unexpected rough seas and crashed on a strange island! The surviving students are trying to understand what happened but soon they realize they are not alone on this island and the locals don't appear to be very friendly to strangers!!!

Zuo Tianchen is the last living human in a mutated zombie-infested city. Just when he was sure he had died, he finds his soul returned to just before that ill-fated day ten years ago. He swears he'll protect the people important to him this time round and reunite with his past lover. Watch his struggles to survive equipped with his memory of the next ten years!

Depicting the story of a shut-in, Kirihara Yukito, after being reincarnated into another world.
His peaceful life with his precious caring sister, Sana, suddenly come to an end when a beast appeared and attack them, thus reincarnating him into the “Ever World”. Moreover, knowing that Sana also got reincarnated into the Ever World, for the sake of finding his beloved little sister he begins his journey in another world…

Village girl Chelsea, who is beloved by everyone, is actually the reincarnated ex-Demon King.
However, when she reincarnated, for some reason neither her magical powers nor skills were inherited, and she was forced to live as a normal human being.

Humiliating days continued until one day, the remnants of the Demon King's army appeared to loot the village. Hunted down by her former subordinate, who did not realize her true identity, Chelsea finds herself in a perilous situation. Then, a skill finally manifests! The name of that skill is "Begging for Mercy"!?

A 30-year-old Japanese NEET joins a private military contractor in the Middle East and becomes the handler of some soldiers.

Tanaka was a salaryman who lived an average life. That life came to an end when he was 41 years old…or it was supposed to. But when he came to his senses, he was standing in a world that resembled ‘Medieval Europe’. There was no heating system, and food was eaten with your hands. On top of all that, pigs ran wild in the city…and what did the pigs eat? Shit. And in this harsh world, Tanaka would live his second life as ‘Varian De Lioncoeur’. Will this average salaryman be able to survive?

Links:
Web Novel: https://ncode.syosetu.com/n4662ec/ (Japanese)

Picking up directly after the events of 20th Century Boys, it seems like the world is finally out of danger, but the mystery of "Friend" still exists. As the world is threatened again, Kenji must search his memories for any clue about "Friend."

Note: 20th Century Boys and 21st Century Boys' combined storyline won the Grand Prize at the 37th Japan Cartoonist Awards on May 9, 2008.