From Tokyopop:
Sealed in ancient jewels are the spirits of the heroes who tried and failed to unite China in the Three Kingdoms era. These jewels have been scattered throughout Japan, and have the power to draw out the full potential of those who inherit them. However, those owners, known as Toushi, are possessed with an insatiable appetite for battle. Hakufu Sonsaku is one such Toushi. Living in the country, Hakufu's desire to beat something to a pulp goes unfulfilled until her mother tells her to go to Tokyo, where she starts training with other Toushi and sets foot on the path to her destiny.

A collection of one-shots publlished between 2007-2008 published on various magazines and the Nisekoi pilot chapter:

1. Island (2007, Akamaru Jump)
For the last 400 years, an island has been completely surrounded by walls, isolated from the rest of the world. Aira and Marue have always dreamed of voyaging outside the walls, where lies a devastating truth unbeknownst to them.

2. Koi no Kami-sama (2007, Weekly Shonen Jump)
Tsuchibe Taichi, a boy who loves shoujo manga and believes in love above all else, ironically has the worst luck in love. His latest attempt in love is at the new transfer student, but a strange otherworldly force seems to be repelling him from her.

3. Williams (2007, Weekly Shonen Jump)
William is a young boy who idolizes Aradoff, a character from a popular novel which told Aradoff's adventures, and always dreams of having a grand adventure on his own. William's meeting with the novel author finally puts him on an adventure to prove that the novel is not merely a fiction.

4. Personant (2008, Jump SQ)
In the year 3333, everyone wears personants, technologically advanced masks, to maintain equality and peace, because they eliminate the "differences" in people that lead to discrimination and conflict. It has been 100 years since the government implemented this "personant system," so society has adapted. Yet one man exists as the only one in the world without a personant: the wanted criminal Damore!

5. Apple (2008, Young Magazine)
The main character (the blond ponytailed guy - yeah, guy) is Aramiya Satoshi, whose main ability is shape-shifting into any animal... though at some point he has plants growing out of him, so he is able shape-shift into any living thing. I'm not sure if he was naturally born that way or if he was a biological experiment. Anyway, he's a pretty easy-going guy who just wants to be left alone to enjoy his solitary life in the middle of a junkyard, but apparently some army or another is always after him because of his ability. Luckily, he is able to fight off entire tank battalions before breakfast.

6. Nisekoi (pilot chapter - 2011, Jump Next!)

This tennis comedy centers around the members of a female middle school soft tennis team and the twists and turns that their lives take as they aim for the national tournament!

A side story of Mahouka Koukou no Rettousei that focuses on Shiba Tatsuya's younger sister's viewpoint and experiences of the events taking place in the main story.

Based on the Little Witch Academia anime by Trigger.

A world full of secrets, where one person keeps it form another. A young girl with a dark past transforms herself into a person she is nothing like before. Caught between affairs and scandals, her life is filled with one too many secrets to keep.

Eighth Research is a large biotech company based on advanced research and development of DNA manipulation. Naoya Graphico is on the security team for the company run by his uncle. Naoya has been acknowledged for his high combat skills and is sent on top secret missions regarding Eighth Research interests.

His most recent task has Naoya infiltrating a rival company where a mysterious girl named Celcia has been kidnapped. Naoya's passion for protecting the weak always helps him accomplish missions; he just needs to make sure his libido doesn't get in the way.

Tomioka Yuji is a 32-year-old night-shift guard for a mall. He works completely alone, so he often slacks off, exercising and hanging out on the roof. In some ways, the job is perfect for him, as he's always been terrible with people. However, he can't help feeling incredibly lonely and wishing he had friends.
One night, he makes a wish for friendship on a falling star. Shortly after, he finds a strange note left at the door of the mall. It says, "within a year, you'll go mad and die." After this, his solitary life begins to change--some ways for the better, and some for the worse. At work, he notices an ominous silhouette in a nearby apartment building, watching him neglect his job.
Who is the mysterious figure? Who sent him the creepy note, and why?

In the Alice in Junk Box series:

V.1 - Alice in Junk Box

V.2 - Dia

English Titles
Vol. 1: Alice in the Country of Hearts: Junk Box
Vol. 2: Alice in the Country of Diamonds: Junk Box Diamonds

Kotori was a normal girl who had always been tempted down the wrong path. As she lived her normal, boring, everyday life, trying so hard to follow her dreams, a bold chubby straw-bale cat walked into her life. Will this cat be a god of luck for her? Or will it become a god of misfortune, and lead Kotori down the wrong path...? A fluffy fat cat opens up the door on this story of a woman's struggles through everyday life!

From Aerandria Scans:

Who am I? I'm Gi-ryum, a tall, handsome bachelor, and the coolest guy in the country who even makes O△ sama (Reference to "Yon-sama": Bae, Yon-Jun from Winter Sonata) cry at my beauty. One day, I received classified info of the princess enrolling in a regular high school. Huhuhu. Can I snag the princess with my irresistible beauty?! I will be the king's new son-in-law!

"What is the boundary between game and reality?"

The world is in danger. Strange juggernauts called "Angels" have started to appear all around the planet, presenting riddles called "Paradoxes" to whoever happens to be in the near vicinity. Answer right and your land will receive God's blessing. However, if you fail to solve the paradox be prepared to receive divine punishment...

An ordinary girl with a flute through her head! Mundane days of "kill or be killed"! Short stories loaded with love and dream and dead people, start now! Source: http://www.u17.com/comic/16179.html

The cute daily life of the artist and her wife

A one-shot special of the sci-fi classic, “Alien 9”! Otani Yuri is 18 years old and has no idea what to do with her future...but she doubts working for her senpai’s “Alien Countermeasures Company” is the answer!

Hana, a country girl, has to move to Tokyo because of her father's work, and what's this? Her school is like a castle, her classmates have their own chauffeurs, and everyone is all sparkly and beautiful?
"I didn't realize that at the same time while my world was changing, my indecisive love was also starting to bud..."

From Mad Hatter Scans

In the desert land of Halvatt, the' friendly' rivalry between a prince and thief turns into an unexpected adventure as they discover mysteries and secrets of an ancient legend that turns out to be true.

Sotomura is a high-school girl who is feared as a delinquent and avoided by most students. From her light-brown hair down to her long skirt and harsh manner of speaking, she completely seems the part.

But after Sotomura rescues a girl named Haruno from some bullies, Haruno decides to try to get to know her better. Haruno is surprised to find out that Sotomura isn't a delinquent at all and is, in fact, just a very socially awkward girl that's bad with words but wants to make friends. She enjoys cooking, handicrafts, and hitting the supermarket sales. Sotomura also loves cute and fancy things, but she hides these girly traits because she feels they don't suit how she looks.

Haruno's first step in helping Sotomura is to try to teach her how to smile, because whenever she tries, it ends up as a scary grin. Thus begins the story of Sotomura's attempts to make new friends.

Machida-kun seems like the perfect brother, son, and student because he loves people. Helpful when he needs to be, but puts himself down when he feels like a total failure. However, the people that surround his daily life are there as a reminder as why Machida-kun needs no improvements because the people love Machida.

Note: Nominated for the 9th Manga Taisho Award in 2016.
Won the New Creator Prize at Tezuka Osamu Cultural Prize awards in 2016.