1. Ano Hi, Seifuku de (That Day, in the Uniform)
2. A-senpai
3. Shishunki
4. Hadaka no Boku (Naked Me)
5. Tenkousei (Transfer Student)
6. Nikoichi

Andou gets an envelope passed to him in class that contains an erotic picture belonging to Kagaya Jin, the mysterious half French transfer student. A short, bittersweet tale from the Meiji era.
(Source: MU)

Do you believe in mermaids?

A boy met a boy. They were in the flush of youth.
They were in love that felt like a dream,
like sparkling soda pop.

The secrets under the uniform, that none of the classmates knows.

A meeting between a caged bird and a murder.
A meeting that never can re-united.
A meeting that so short yet so sad...

Paul, a serious honor student, meets the violent and rebellious Andrew in their all-boys school. What follows is a story of the struggles of youth and painful but powerful self-discovery.

Daddy, Mommy and Mika make up the perfect modern family. Mika is Daddy's little princess, and he won't hand her over to any one. But when handsome Atsushi-sensei at the daycare center becomes Mika's perfect prince, sparks fly. What ever will Daddy do?

It's a very short but sweet oneshot about an artist and her portrait model.

The Butler Tsuruhami tries to turn away a door-to-door salesman, but it won't happen that easily...

From pinklotus89:
A story about a girl in her death bed finding another chance in life in the body of a doll. But is the girl in the bedroom the same as the girl in the sculpture room? Can the doll master make her dreams come true?

Though Rihito’s always been a loner, lately he’s grown close to his classmate, Hikaru. The two of them have even fallen in love and tentatively started dating. But when Rihito’s mother ends up in the hospital, the stress of it all becomes too much for him. Hikaru wants to be there for Rihito, but can Rihito learn to open his heart and rely on another person? (Source: Seven Seas)

A mysterious story about a poor young man who orders a kind of tea called Huan Ying – “The Illusion”. He asked for a small quantity - just to have a taste - and was granted one cupful...

Four murders have taken place at an all girl school. Lying beside each of the victim was a teddy bear with one missing limb. Now It is up to Detective Hebizuka Amaru and his cute assistant Kohijiri-kun to solve the mystery!

This sweet story follows an anthropomorphic piano on its journey from one owner to another.

A black-and-white oneshot about an awkward couple.
(Source: Anonymous Delivers)

Even though J no Subete is 3 volumes long, each volume is a dynamic story in itself covering a particular stage of J's life. His life is a dark story and it's a very psychological manga.
Book 1 is about all of J's trials and tribulations throughout childhood, during highschool as he tries to find his place in the world and when he meets the somber Honor student Paul...
Timeline (from Oriolidae & Sparviero):
01 Barairo no Hoo no Koro v01 ch01-05
02 J no Subete v01 ch01-05
03 2 Shuukan no Adventure v01 ch04-07
04 J no Subete v02-03
05 Barairo no Hoo no Koro v01 Extra