From: Easy Going Scans

Ju Ingong (which literally translates to Main character) has been terrifying all his schoolmates in every school he has been so far. He has one extremely scary face type and whoever lays his eyes on him thinks he is a BAMF (bad ass). Although… is he really?

From Divine Sanctuary:

Ayano, the committee chairman got drunk at a ballgame after party. Next morning, when she came to, she finds herself in Kagura-kun’s bed! Plus she is in her undergarments?! Kagura-kun, who is in the same class as her, is the 10th head of the famous Kagura lineage. Having had one night stand with someone so omnipotent, Ayano can’t help but feel anxious. What should Ayano do?

Reiji and Kasuga head out to Tokyo to become the "Gods of Rock," but they seem to always attract trouble. On their way, Hayama Ryo and Fujii Ran join them in their quest.

Welcome to Cromartie High—a melting pot of underachievers and overzealous bullies, where the fist rules, and the student body has the combined I.Q. of a rusty nail. After a whole lot of bad judgment and a little bad luck, Takashi Kamiyama is now attending this academy of dunces. Here, his only homework will be defending himself against the foul-mouthed robots, semi-intelligent apes, and masked villains that roam the halls of Cromartie High School!

Won the 26th Kodansha Manga Award for Best Shounen in 2002 (shared with Beck).

Note: The chapters are incorrectly numbered starting from Volume 14 (the volume begins with chapter 267 even though the last chapter of Volume 13 is 269).

Ishiyama High is a school populated entirely by delinquents, where nonstop violence and lawlessness are the norm. However, there is one universally acknowledged rule—don't cross first year student Tatsumi Oga, Ishiyama's most vicious fighter.

One day, Oga is by a riverbed when he encounters a man floating down the river. After being retrieved by Oga, the man splits down the middle to reveal a baby, which crawls onto Oga's back and immediately forms an attachment to him. Though he doesn't know it yet, this baby is named Kaiser de Emperana Beelzebub IV, or "Baby Beel" for short—the son of the Demon Lord!

As if finding the future Lord of the Underworld isn't enough, Oga is also confronted by Hildegard, Beel's demon maid who insists he take responsibility as Beel's guardian. Together they attempt to raise Baby Beel—although surrounded by juvenile delinquents and demonic powers, the two of them may be in for more of a challenge than they can imagine.

Loner high school student Moribe Kyouya thought he was lucky to have the beautiful and mysterious new transfer student Baroque talk to him. The next thing he knows, he receives a love letter calling him to the roof, but the confession isn't exactly what he expected...

One day a tanuki named Monoko stumbles across a baby abandoned by its mother. Having no family of her own, she raises the baby to the best of her ability even though they originate from different species. Hardships and enemies face the tanuki but that doesn't stop Monoko protecting the baby at all costs. Many trials await this baby as it grows and communicates with the animal world.

Won the Kodansha Manga Award for Children's Manga in 2013.

From Easy Going Scans:

A gangster girl in high school decides it's time to live life properly after graduating by marrying a nice man and living a normal life. However, her past as a gangster constantly threatens to come out from time to time and she has trouble holding back. And when she has a daughter...apples don't fall far from the tree.

Atori has an unusual part-time job... she’s a demon hunter! After school, she hunts demons for a mysterious organization named N.U.E. To kill her enemies, she unsheathes the saber hidden within her hair. However, Atori is actually half-demon, but she has forgotten her past. Despite this, she's been able to overcome many difficulties as well as befriend those from both species. Unfortunately, her once calm life is beginning to quake as a terrible shadow now looms over her...

Kyousuke wants to be a cop. Because of that, he always tries to do the right thing and help others out. Well, while saving a girl from some bullies, they end up liking each other. Not to soon after, she needs saving again, and he ends up with woman's panties over his head, giving him super strength (pumped with horniness.) Not your normal super hero.

Quick tempered, dirt poor brawler Kotarou Mikata can’t hold down a job because he always ends up beating the crap out of some errant customer. Just when he’s at wit’s end, “S” offers Mikata a job as a “hero”. But what exactly does it mean to be a hero? Join Mikata on his WTF journey from brawler to hero in the action romantic comedy “Seigi no Mikata”!

Take Isamu is the best at everything he does at school, from looks and smarts, to his luck with girls and his abilities as an athlete. He considers himself to be in the top percent of his age group and is incredibly bored with interacting with the so called "normal people". That is until a new student, Kaname Moka, transfers into his school and, as she is quite pretty, Isamu asks her out. Moka mishears what he says and thinks he wants to challenge her to a fight, as she grew up on boxing. Determined to win her heart, Isamu decides to become a great boxer, with the help of new friends and allies he and Moka meet along the way.

From Manga Abyss:

Japan's law enforcement has worsened, and bodyguards are a necessity in the new era. Asahi is employed as a bodyguard for Kisaragi Sakuya, the talented heir of a rich family. Asahi was brought up in downtown Tokyo, and she is very compassionate. But will she always be able to stand strong against the utterly cold Sakuya? This is a powerful, shoujo, bodyguard romance.

This is the one shot of the movie that Ito and Makoto starred in from W Juliet II.

From Yen Press:
The air of celebration surrounding fifteen-year-old Oz Vessalius’s coming-of-age ceremony quickly turns to horror when he is condemned for a sin about which he knows nothing. He is thrown into an eternal prison known as the Abyss, from which there is no escape. There, he meets a young girl named Alice, who is not what she seems. Now that the relentless cogs of fate have begun to turn, will they lead only to crushing despair for Oz, or is there some shred of hope for him to grasp on to?

From Yen Press:
At the invitation of an old school friend, introverted high-school student Mikado Ryuugamine, yearning for a life less ordinary, makes his way to Tokyo. His destination: Ikebukuro, a hotbed of madmen living most unusual lives. On his first day there, Mikado encounters a cast of characters so colorful, the rich hues of his rural hometown pale in comparison! And as if the naive stalker chick, the high school senior obsessed with the rather creepy object of his affections, the hikikomori genius doctor, the hedonistic information dealer, the strongest man in all of Ikebukuro weren’t enough…Mikado also chances upon a sight that leaves him rubbing his eyes and scratching his head — the Black Biker, who is black as night from bodysuit to license plate, soundlessly weaving through the streets like a figure out of an urban legend. Who is this “Headless Rider” on the jet-black metal steed!? And why does it seem like Mikado’s already gotten himself neck-deep in the insanity that is the norm in his new home!?

1st Arc: Durarara!! (4 Volumes)
2nd Arc: Saika Arc (3 Volumes)
3rd Arc: Yellow Flag Orchestra (3 Volumes)
4th Arc: Akane Arc (still ongoing)

There is fighting going on at a high school due to a power struggle for control. A beautiful young girl, the granddaughter of the director, requests help from a tough silly young man renowned for his genius fighting style. At the same time, other beautiful girls appear from the same high school who also want him as a teacher. Will he help and if so, which side will he choose to support? Or will he just show his true face with his bad boy ways?

In the 30th century A.D., in a world in which magic exists, 100 years have passed since the human race won a war against the Devil King. Even though the war caused many sacrifices, slowly but surely civilizations began to rise again.
One day, a virtuous child named Sai Akuto ("Worst Evil") is adopted from the orphanage he's lived in ever since a witch quietly left him at the church as a baby.
Five years later, Akuto passes the test to enter Constantin Magic High School. But after arriving and taking the vocational aptitude test, Akuto receives surprising results:
Examination Numbers: Number 021
Name: Sai Akuto
Future Occupation: The Devil King

An espionage seinen manga that takes place in the era of Cold War. Ken, Dr. Hattori and Rosa, three different characters are forced to team up in order to protect Sphere of Salvation, a new technological miracle that is capable of changing the course of history. Whoever holds S.o.S. and masters all its hidden forces, will rule planet Earth.

School girl is trained by a secret branch of the police to detect and to kill demons disguising themselves as humans.

Kim Tae Sik is a young man who would much rather spend his time at internet cafes, playing games, than going to work and filling out papers. After getting fired from his job, he ends up seeing a mouse cursor and follows it, leading him to a group of delinquents who earlier beat him up. Seeing how the cursor changes to a knife shape, Kim Tae Sik decides to fight the delinquents head on and ends up winning.

From there on, he chooses to follow the mouse cursor and wherever it leads him, as he believes that it has all the answers and keys to his purpose in life.