In this story, our heroine, Shinobu, is a female ninja in training. The only trouble is, she seems more interested in hanging out with her friend Kaede, and the fact that her ninja Master is a round yellow thing that pretends to be hawk isn’t helping.

From AtoZ:
School will bring a fresh start and a way to break free from her seemingly cursed fate. Disaster strikes before she even arrives for her first day at school and a most embarrassing secret is discovered by Chun Hyuk, an aspiring band vocalist who loves only money and music. Can Yu Goon Goon and her best friend, Da-Jung, find a way to shut the mouths of Chun Hyuk and his fellow band members before her high school life is ruined? Da Jung wants to make a deal with the guys but how high a price are the girls willing to pay?

From Antebellum Scanlations: Momoko, who dreams of becoming an illustrator, finds employment in an ultra fast-paced office that specializes in designing pachinko parlors!! With the office running a yazuka-like business and employing a designer, who has a habit of suddenly stripping in the middle of the night, Momoko believes that the company employees are a bit... no, definitely eccentric!! She continues pulling all-nighters, unable even to return home... And in the midst of cigarette-filled fumes, where women's authority takes a step back, she asks herself, "Why am I here?"

Traumatized and depressed by an old breakup, Kanou has a chance encounter with a young high school student that saves his life in a small, but profound way.
Inspired by the vitality of youth, will Kanou take the leap to find love for himself again, and most importantly, will Kanou learn to love himself?

Rio's breasts are the only things preventing her from having a wonderful love life. Her first boyfriend was embarrassed by her breasts and her second boyfriend thought she wanted to have sex with him. She wants someone to love her for her personality, and recently a handsome boy with glasses has come into her life: Nomita. Where is this headed?

Thief Gintonic seeks the mysterious treasures known as "The Three Hearts". One night a mysterious woman falls from the sky claiming to be an escaped Princess from a sacked castle. As fate would have it, she has one of The Hearts. But is she really who she says she is? And will Gintonic let her live to fulfill her mission?

From Noctis Op.92:
What exactly is the difference between a robot and a human?

In a dystopian future in which robots are becoming increasingly commonplace, a young boy named Hogu lives in near poverty with his grandmother and sister. Though he innately possesses a kind soul, he is ostracized by his classmates and frequently bullied. At the beginning of the story, we find Hogu, friendless and alone - until he meets a robot girl...and our story begins.

Takato has been always bullied by his next door neighbor and physician Yasuyuki-sensei. One day, Yasuyuki's friend Kazusa comes over and Takato believes him to be his savior, but who knew Kazusa was a bully just like Yasuyuki. A one volume, threesome comedy.

Although she is a 15 year-old girl who dreams for a romantic relationship, China grew up to be very boyish. Now that she's in high school, she meets a cute (kind of short) boy named Haruka, and a big genius-boy named Shindou...

3, Street of Mysteries explores the fantastical-poetic vein that has forged Mizuki's reputation in Japan. The stories contained in this series hold in common the obsessive ideas of immortality and of life after death. Skillfully blending a range of black humor, drama, and questions of morality, Mizuki shows once more his profound understanding of the human soul.

(paraphrased from Astiberri)

En is already in high school, but she has a memory that torments her, which is not having spoken one last time to her ex-boyfriend Ishigaki Takashi, who she met two years ago and is younger than her. But now Ishigaki has appeared in her life again, bringing with him memories and feelings that En believed she had forgotten. What will happen now? Will love rise again from the ashes? What would happen if this time it was Ishigaki who couldn't make the first move?

Includes 4 works that were published over span of 10 years:

1. 1 Gatsu no Merry-Go-Round
A high school girl has a crush on a boy two years younger, but she has always insisted she could never date a younger guy.

2. 3 Gatsu no Dai 2 Button
A girl realises that she likes her childhood friend whom she's always joked around with but never thought she thought of that way.

3-5. Onna no Ko wa Genki!!
About three fifth-grade girls (Chisa, Nanami, Yuula) who are best friends.

6. Basket Girl!!
About a girl who practices hard so she can be a starter for her basketball team's last match of the year.

From: http://kanata.dreamwidth.org/1308413.html

A youth named Kiriyama Rei, who lost his family as a child, endures loneliness to become a professional shogi player. Then, through a chance meeting, he develops a relationship with the three Kawamoto sisters (Akari, Hinata, Momo), who hail from a working-class district of the city, and little by little his frozen heart begins to thaw.

Note: Nominated for the 2nd Annual Manga Taishou in 2009 and won this award in 2011.
Won the Kodansha Manga Award in the general category (shared with Space Brothers) in 2011 and won the Grand Prize of the 18th Tezuka Osamu Cultural Prize in 2014.

The story is set in the year Showa 44 (1969), and it centers around Takanori Jinguuji, the 27-year-old man who eventually become the head of the Japan Shogi Association in the main 3-gatsu no Lion series.

A collection of stories:

1-4) 3 manen no kareshi
Takagi is like the prince of his office every girl admires. But in his private life, he just broke up with his lover, and his body is sexually deprived... At the time, he learned about "rental boyfriend" by chance. He tried, booked someone, and the one who came was a really cool young man named Daichi. His body is perfect, and Takagi wasted no time seducing him to bed, but the service strictly prohibits sexual activities?! Takagi lost his interest in Daichi when...? (From Yaoi Is Life)

5) sugar french

6) no joke!

An episodic chronicle of the bizarre adventures of a group of misfit junior high school boys who form a club known as the "Kimengumi."

From Exiled Rebels Scans:
Toujou Aki lives with his younger step-brother, Saku who is a university student. Instead of going home to sleep though, Saku will stay out with as many women as possible, to the point of being a man-whore. Aki, on the other hand, has a deep hatred for women, enough to make him nauseous being around them. Aki’s one secret is that he would do anything for his brother. No matter what it is. However, everything can change in an instant during the silence of three minutes.

Just spend three seconds of your day on this three-panel comic!

By all the usual measures, he could be considered a pretty useless guy: a scholastic failure, an athletic disaster, and a chronic loser... but Fukuda Shinichi has one passion: cheering for others!

The 18-year-old captain of North Kanto Southern High's Cheerleading squad decides to make the most of his summer by attending cram school in Tokyo, only to find out that the whole trip was a sham! Things are looking up when he and his friend meet up with two cute Tokyo girls; too bad the girls brought them to a rip-off bar and took off! Ditched by his one remaining friend and stuck with an impossibly high bar bill, Fuku-kun's life couldn't get any worse!

But just then he gets saved by Ume, his role model and former cheerleading squad captain! What is he doing in Tokyo... and why does everyone around seem to know and respect him? Without anywhere else to go, Fuku-kun decides follow Ume to his job, only to discover that... he's a male gigolo!? Fukuda's summer of cheering others on has begun... and the streets of Tokyo's red-light district will never be the same!

Iro’s plan was simple. Pretend to be a service man, make the delivery, and exchange a few words with Rene, his dream guy. But when a drunk Rene mistakes him for the android he ordered, Iro decides to take advantage of the situation. As long as he keeps playing along, he gets to live with the man of his dreams! But what will happen when Rene finds out the truth?