Poor, in debt, and living on instant noodles, high school kendo instructor Kojiro makes a bet with an old friend on a practice meet between the all-girls’ teams of their respective schools. The prize: a year’s worth of free sushi! It’s too good for the desperate Kojiro to pass up! But with only one active member on the kendo team, Korjio must move quickly to put together a squad before the meet. He’s got his eye on Tamaki, the daughter of a kendo master and a skilled swordswoman herself. The only trouble is…she’s not interested. Kojiro’s willing to try anything, but what will it take to win her over?

From Easy Going Scans:

Piano prodigy Arima Kosei dominated the competition and all child musicians knew his name. But after his mother, who was also his instructor, passed away, he had a mental breakdown while performing at a recital that resulted in him no longer being able to hear the sound of his piano even though his hearing was perfectly fine. Even two years later, Kosei hasn’t touched the piano and views the world in monotone, and without any flair or color. He was content at living out his life with his good friends Tsubaki and Watari until, one day, a girl changed everything. Miyazono Kaori is a pretty, free spirited violinist whose playing style reflects her personality. Kaori helps Kosei return to the music world and show that it should be free and mold breaking unlike the structured and rigid style Kosei was used to.

Won the Kodansha Manga Award for Shounen in 2013.

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?

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).

From Nagareboshi Manga:

A collection of oneshots:

PS I Love You
A girl finds a note in a book written by her class' most rebellious boy. Will this note somehow connect them...?

Koibana - Koi
A young hostess finds some joy in her life by helping a boy become more confident in his love life.

17 Sai
The best friend of the girl in the story get along really well. Until one night where something happens between the two of them and everything changed after that.

Happy Honey
A girl finds herself the object of an American boy’s affection. Can she respond without prejudice?

From Manga Art:
2nd year Junior High schooler, Misaki is in love with Mutou-kun in her class. But the one he loves is the class idol, Kuririn. However, Misaki doesn't need to be depressed. She's got other options...!?

* Contains an extra story called Shotto Sunzen!.

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.

1-4) Akihabara Fall In Love
Hasegawa was always called an Otaku when he was younger because of his glasses. Because of that, he had to hang out with other Otakus even though he didn't consider himself as one of them. He completely changed his image in middle school and finally landed in a large company after graduating from university. However, he has now been appointed to a local area, Akihabara where he once again finds himself shoulder to shoulder with other otakus.

One day, on his way home from work, he decides to help an otaku looking kid from getting robbed. However, he gets hurt and the next thing he knows is waking up in a strange room and encountering the person he helped in a compromising position.

5) Extra: The Coward's "I Love You"
Haru's childhood friend, Genta, is the new transfer student from America. Since their mothers were classmates in college, they spent most of their childhood together and Haru has loved him since then. But when the grown up Genta tells him that he has someone he likes, how will Haru react?

A girls' high school that Mamoru attends has amalgamated a boys' high school, which was her wish for a long time. She expects that she will be able to find a boyfriend soon. However, boy students are around ten percent of girl students, and Mamoru is annoyed because her classmate Azuma makes a pass at her. He is known to be dirty-minded. When she was fighting against him as usual, he kissed her all of a sudden.

Also contains two extra stories:

- Let's Study Together

- Where's the Love, Where Are You

Koharu is dating the prince in school, Suwa. But things don't turn out as planned when Koharu tells him to keep their relationship a secret!

Sorako and Sorao met in the school office when they both had transferred to a new school. They became friends really fast, but a short bubbly girl comes and claims she likes Sorao. What will Sorako do? A really nice love story.

From ShoujoMagic:

Haru, an energetic, honest, and sweet young girl, meets the popular grade schooler Yashima at a bowling rally, and she unintentionally develops a strange interest in him. He's very forward about wanting to date Haru. However, Haru is in love with her childhood friend, Yuusaku, who thinks of Haru like family and rejected her love confession before he left for America one year ago. But now Yuusaku is back! How will both boys respond to learning that they have competition for the role of most important man in Haru's life?

First volume includes a yomikiri, Let's Go Youth Heaven.

Miku is on the same tennis team as her childhood crush, Tomo-nii.
Not only can this guy kick ass in tennis, he's also good-looking and super nice! The only thing that Miku doesn't like about him is his brother, Natsume. Completely opposite from his older brother, Natsume is known to play girls, and be a basic cocky pain in the neck.
But one day, Miku finds out something about him that ends up shocking her to no end...!!

Yoshimatsu Hotaka is the president of the manga club and is always diligent with his studies and club responsibilities, even though he has a habit of skipping class activities. Although he looks like a regular honor student in reality he is overwhelmed by melancholy and haunted by his past misfortunes. Meanwhile, he makes sure to admire and watch Awaya Nika, the beautiful, bright, radiant, super cheerful swimming club's female ace. He's content to continue his high-school days like this until the P.E. teacher makes him take a private swimming lesson to make up for all the other lessons he had missed; a development that would forever change the dynamic between him and Awaya. What's the cause of Hotaka's bitterness? What does he want to hide?
How does Awaya Nika have more in common with him than he could ever imagine?

From MangaHelpers:
It's fairly obvious to Terui Chiaki that her classmate Ajikawa Yoshio has a crush on her. He is completely not boyfriend material in her eyes and, even if he was, Chiaki already has a boyfriend. Their mysterious teacher Mr. Yamada sees this relationship between the two students and offers an experiment. He is able to make copies of people and objects and does so with Chiaki, creating a copy of her, except the copy has no knowledge of her boyfriend. Yoshio will hit on the Chiaki copy, who is named Koaki, and he'll try to make her fall in love with him. After a specified amount of time, the copy and original will be combined back together and which ever love is stronger between the current boyfriend and Yoshio will overwrite all other emotions. So this love experiment begins and both Chiaki and Koaki, being the same person, thinks Yoshio has no chance in hell but with each passing day, some feelings begin to bubble.

From UTBCT:

"Their love was a dream."

A member of a boy band, a very popular and charismatic musician, the guitarist of Dada!! I've been dreaming of such yearning love with a boy, who is just out of reach everyone present. But I really would want to live this love that has become a reality?

A collection of hearthwarming and romantic stories by Anashin.

From Shoujo Manga Maniac:

1) Love Lab
The chemistry club invented a special hormone potion. Each bottle cost 500 yen. Riko-chan's boyfriend, Yuuki-kun himself is extremely cold towards love. Riko-chan hopes to move their relationship one step ahead, but in the end...?

2) Merry Kiss

3) Perfect Doll

4) Twinkle Twinkle

5) Cupid's Arrow

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.

High school is difficult for most kids. But for Kayano, a shy girl whose single mother seems to work all the time, it's even worse than usual. She's so afraid of drawing attention to herself that she can't tell the handsome Kamijo how much she loves him until one day she finally gets up the courage to write him a letter confessing her feelings.
When she goes to give him the letter all her plans go awry. She's given the letter to the wrong person! Accidentally, she's given her love letter to Takeru Edogawa who just so happens to be the school principal's son, head of the delinquents and the notorious "Prince of Attraction"! To Kayano, he seems like Satan himself. Not only is he devilishly handsome, but he seems to take the utmost pleasure in making her suffer. Things only get more interesting when Kayano's mother comes home one day and announces she's getting married again --- To principal Edogawa! What will Kayano do when she has to live with this devil 24/7? How will she cope with her literal "Hell on Earth"?