Amamiya, Sae

Plica-chan is the bittersweet, realistic story of Plica, a young lesbian looking for love in modern Japan.

The manga, which is written in 4-panel strip style, originally ran in Anise magazine, and now runs in the LOUD News, the newsletter for the LOUD organization. It can also be found online. Plica's comments are often on the nature of sexuality, the relationships between men and women, and between women and women.

The whole strip starts on a low note, as Plica returns from an ex-lover's wedding. But not too long into it, Plica meets Mari, for whom she starts to have feelings pretty soon.

(Source: okazu.blogspot.com)

Plica-chan

プリカちゃん

Takashima, Rica

The adventures of college student Rica, as she attends university in Tokyo and visits the gay and lesbian district looking for friendship and love. Rica's story is sweet and funny, realistic and a little wacky with a refreshing lack of self-hatred and doubt, but with no lack of real emotions.

(Source: MU)

Rica tte Kanji!?

Tokyo Love: Rica'tte Kanji!?

リカって感じ!?

Loneliness... They meet on a park bench one night. They were just classmates, barely knew each other. Secrets... Something make them talk to each other, reveal truths about themselves. Warmth... In the chill night kisses and caresses are more than just lust, as they explore and discover. Love...? 

(Source: Baka-Updates)

Dame Ningen Jan

Tsukumo, Mutsumi

A classic yuri manga about a woman who leaves her husband for an old friend from school. There are two stories in this manga--one (Moonlight Flowers) is the main story, and the other (Midnight Flowers) is about the protagonist's friend's past.
Note: this manga contains rape.
(Source: Lililicious)

Also includes another unrelated story.

Moonlight Flowers

月下美人

Yamada, Yugi

Compilation of 7 short stories:

1) Love Affair in the Afternoon
College student takes over a tutoring job for the friend he has a crush on.

2) I don't mind it if You are a Man
College students/neighbors are (only?) sex friends.

3) Love's Worries
Ex-lovers from their student days are reunited.

4) Kana and Patience
Divorced man cheats on his new lover.

5) Why there is no Ice Beer
Younger co-worker always hangs out at his sempai's house.

6) Bring Me to the Edge of the World
An odd 17-year-old electrician puts in an air conditioner for sexy businessman.

7) Spinning World
Sequel to Bring Me to the Edge of the World. 

(Source: MangaUpdates)

Yarashii Hirusagari

やらしい昼下がり

Kujou, Aoi

Hiroshi and Takuya have been childhood friends forever. When Takuya asks Hiroshi to be more than friends, will their friendship be able to withstand? Or have they always been soul mates?
(from B-U)

Akai Koi

Enomoto, Nariko

Miwa confesses his feelings to his friend Katou, but in response, Katou introduces Miwa to his gay friend Hashina. Miwa is shocked, and rejects Hashina, but that just makes Hashina fall in love creating an unrequited love triangle. Miwa finds comfort in Hashina, but will he ever be able to let go of his feelings for Katou?

(Source: MU)

Kimi no Kao ni Sasu Kage

君の顔に射す影

Fukai, Youki

A young man lives in a small town where he owns a small grocery shop and struggles through life alone with his small son. His childhood friend moved away after graduation and appears suddenly years after at the threshold of his shop , without money or occupation and puts his life to utter chaos.
(from M-U)

Kimi ga Iru Basho

The Place Where You Are

きみが居る場所

Shiina, Ayumi

Takasaki Tomoka is a young girl seeking love. She had finally found her prince and slowly began to think of a way to speak to him. Tomoka met up with her childhood classmate from piano lessons, Miyazawa Arata and was invited to a performance by his band. There, she met the prince she had been admiring for many days. After becoming drunk, Tomoka confessed her love to her prince but problems arise with Tomoka having to take her love down through a dangerous path. (Source: M-U)

Anata to Scandal

You & Scandal

(あなたとスキャンダル

Ima, Ichiko

A collected volume of Ima Ichiko's early yaoi one-shots and doujinshi, published from 1991 to 1995.

1. Itoko Doushi
2. Kedo... (However...)
3. Aibiki (Secret Meetings)
4. Kuroi Raincoat (Blackcoat)
5. Mori ni Itta Hi (A Walk in the Wood)
6. Ningyou no Hahen (Scale of a Mermaid)

Itoko Doushi

いとこ同士

Wako

WAKO's "Presents on Christmas Eve" (or, as Syk and I prefer to call it, "All I Want For Christmas is Surprise Lesbian Sex"), is about learning to overcome the pain of the past and live in the present. Or, as we prefer to describe it: "You raped me? How could you do that, that's so awful!" "But I'm a woman." "Oh, OK, then. Lesbian rape is great. Can I have your name now?" "No. Less talk, more sex!"

(Source: Lililicious)

Seiya no Okurimono

聖夜の贈り物

Otosaki, Tsubaki

Itou, Chika

A collection of short stories:

Endless Narcissus by Otosaki Tsubaki
The protagonist wants someone who will love her and her alone, so she gets a clone of herself.

Hidden Meaning by Itou Chika
A writer and an editor are lovers. The writer keeps basing characters on her lover, and the editor wants her to stop because she's afraid that people at work will find out about their relationship.

Maintenance by Itou Chika
A woman fantasizes about the mechanic who works next door to her office building. These fantasies involve being the car the mechanic is fixing.

She, Her, Her, Hers by Otosaki Tsubaki
Sakuya is shaken up by her parents' divorce and is worried that her relationship won't last forever either. Her lover, whose parents are also divorced, understands her feelings and tries to reassure her.

Note: these are only some of the titles contained in this anthology.  In total, there are twelve stories.

(Source: Lililicious)

12 Manga Like Onnanoko ga Suki