Ryu Kang-Min is a member of the massive killer organization 'Batala.' This is a place from which there is no escape once you enter. Then one day, he receives a special commission in exchange for 'freedom.' The mission is to kill a 'target located in Korea.' Ryu returns to Korea for his freedom and, as a warm-up, eliminates the organization's 'traitor' first. Having completed his brief warm-up, he begins the mission in earnest…

Aoba is a first-year high school student who takes care of his younger siblings in place of his busy parents, and ends up at a sibling playdate in the home of his classmate Mizudori, a cool beauty known as the "Ice Princess".

A spin-off of the series The Angel Next Door Spoils Me Rotten which comicalizes the stories from Volume 5.5 of the Light Novel and its special edition booklet, which contains additional short stories.

One day, school teachers come as freeloaders to the inn run by his parents!? Kazami Hiro, a high school boy, decides to take care of the inn and his future!? Under one roof, The forbidden harem romantic comedy begins!!

The year is 20XX… A time when every household owns cute maid robots known as OrderMaids. Average grade-schooler Bondo dreams of having his very own robot. But what he got was… Unable to compute!!! Life is gonna get a whole lot weirder when Roboco, the most powerful clumsy maid ever created, shows up at his door!

The daily life of up-and-coming female mangaka living together in a dormitory.

A high school boy is secretly cheating on his new cute girlfriend with another girl who likes to lick sweat off his body.
To you who have tongue licking and sweat fetish, this series is perfect for you

「Senpai, you dropped this.」

That sudden call marked the beginning of a relationship of an aloof senpai and his cute overenthusiastic kouhai-chan. Despite not having any contact previously except for using the same train station to get to school, senpai unwillingly agreed to a promise: from that day on, they would have to answer one question every day no matter what it was without telling any lie.

The disinterested senpai who doesn’t want to give up on his peaceful commuting time, and the passionate kouhai-chan who doesn’t want to give up on the only student taking the same train as her. This is the story of how their relationship will progress with just one question a day.

A new fluffy senpai- kouhai romcom from the popular web novel!

One day, Doppo, the high school protagonist, suddenly heard a voice from his phone saying “The game has begun.” and that the “chosen challengers” have been taken to another world. If they complete their mission, they can return to their original world. However, this new world is filled with terrifying monsters… Can they survive and return to their original world?!

Gamin Yoon, a 17 year old student, goes to a school known to harbor future criminals. Stuck in a carnivorous environment where only the strongest survive, he struggles to get good grades to enter a 4 year university. But, will he be able to study well enough to enter university, or will he get involved in the unending fights around the school?

A popular Twitter shorts series depicting the love story between a gyaru and her classmate who she mistakes as a guy outside of school, bonding over their mutual love for rock music.

I "transmigrated" into a world I'd never seen before.

For thirty years, I believed I was living in a classic fantasy RPG.

I became a war hero, retired, and thought I was finally about to see the ending.

But...

Those thirty years were only the prologue.

It turns out the real story is about an academy?

"If you were to disappear... I might just lose myself."

Arcs is reborn into the world of the wildly popular otome game Celestia Kingdom. He thought he was just a background character—until it's revealed he's actually the childhood friend of the final boss! Determined to avoid the bad ending, he throws himself into his daily life as her servant. But it seems the true cause of her descent into darkness is... her childhood friend!?

An unpredictable tale of master and servant, between a slightly (maybe more than slightly?) yandere heroine and an obliviously overpowered protagonist, begins...!

Eugene, a hero, is forcibly reincarnated by the demon king Venomzard. In a world far in the future, he becomes a noble boy named Julius. Freed from his "hero" mission, Julius decides to enjoy his second life and his school life. However, his brother, Gaias, mocks him, and his parents and teachers consider him a failure. Having been reincarnated with the immense power of his previous life, Julius unknowingly becomes a warrior ...!

Orignal webnovel: https://ncode.syosetu.com/n8910gh/

The beautiful English teacher Momoko Irosaki receives what she thinks are the lustful gazes of her male students every day... or so she misunderstands!? What goes on in the school life of a teacher who inadvertently indulges in fantasies full of allure...?

Kuroto Hinata is searching for his sister, who "once existed" but is now forgotten by everyone around him. He receives a letter from the beautiful transfer student, Shirai Shimotsuki, stating, "If you want to know about the whereabouts of your sister, come to the library after school." When Kuroto goes to the library, he finds Shirai inexplicably half-naked and waiting for him.

A new teacher is assigned to Momotsuki Academy. Her name is Rebecca Miyamoto, or Becky. She is short, but she is pretty smart. This is a school comedy performed by Becky and strange students... and animals!?

Shinichi Kudo is a high-school student who, by using observation and deduction, is good at solving mysteries. While investigating one, he is caught by the criminals that he was watching and forced to take an experimental drug. Leaving him for dead, the criminals disappear. Instead of killing him, however, the drug turns Shinichi into a little kid.
To preserve the illusion of his 'disappearance,' Shinichi adopts a new name based on his favorite author (Arthur Conan Doyle) and becomes Conan Edogawa. Ran, his (actually Shinichi's) childhood friend takes this little boy under her wing and brings him to her home.
Conan now lives at a detective agency run by Ran's father, but his mind is as keen as ever and he continues to solve mysteries... always allowing Ran's father to take all the credit.
As far as everyone's concerned, Conan is just a little kid anyway... even to Ran. This is *extremely* frustrating to Conan since nobody will listen to a 'little boy.' Despite this, Conan has a mission... to find the criminals who did this to him and get the antidote to that drug.

Note: Won the 46th Shogakukan Manga Award in the shōnen category in 2001.

From Paperdolls Project:

Nonoyama, whose only friend is a stuffed animal, spent her elementary and junior high school years as a true truant because of neglect and bullying.

Now having the chance to reset her life as a high school student in an out of town school, she's determined to make friends and enjoy her school life! However, her high school life is a rocky road from day one...

Rintaro Shido, a high school student who aspires to become a full-time househusband, is in the class with a very popular idol, Rei Otosaki. The two have no connection other than being classmates, but their relationship changes drastically when Rintaro serves Rei a home-cooked meal after she nearly collapses from hunger! The food was so delicious that Rei said, "Can I come here every day to eat?"...?!