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

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

Nakamura, Rie

This manga is a sequel of Jungle Boy manga. This time, the story is focus on Takimoto and Kousai's relatoinship and a bit of back story about Takimoto's brother. 

The last part of the manga is a one shot called Partita, about A boy, Shinya and Satoru and their trouble about family life.

Kimi no Te wo Hanasanuyouni

君の手を離さぬように

Hagio, Moto

The story follows Jeremy, who is sexually abused by his stepfather. Mentally disturbed by this, Jeremy goes down a path of murder; however, he accidentally finds himself the murderer not only of his stepfather, but also his own mother.

Soon his stepbrother Ian begins to suspect him as well as discover the twisted truth about his own father.

Zankoku na Kami ga Shihai suru

残酷な神が支配する

Takemiya, Keiko

Serge Battour is the son of a French viscount and a Romani prostitute, and despite his kind nature and academic talent, is shunned by his family and his peers due to the color of his skin. He begins to attend Lacombrade Academy, his father's alma mater, in the hopes that there he will find a place to belong.
 
Gilbert Cocteau is, like Serge, the orphaned son of a wealthy family, and is infamous at Lacombrade for his beautiful and delicate appearance, lack of dedication to schoolwork, and habit of prostituting himself to other students. He has no intention to connect with any of his classmates, instead devoting himself to his uncle Auguste.

Due to a shortage of living space, Serge and Gilbert become roommates even though Gilbert's antisocial nature has in the past made it impossible for him to room with anybody. Serge, being sociable and idealistic, is determined to be friends with Gilbert; Gilbert is only interested in either being able to manipulate Serge or push him away entirely. To the surprise of both of the boys, however, the two eventually form a deep, albeit generally dismal, bond that leads to a romantic connection.

(Source: MAL)

Kaze to Ki no Uta

風と木の詩

Won, Soo-yeon

Is this desire for freedom the very thing that entrapped us.

Let Dai is a tragic tale of forbidden love and unforgivable betrayal. Set in a soulless neo-Seoul ruled by young punks and pleasure seekers, an amoral teenager named Dai is the living embodiment of the city's beauty and cruelty. As the leader of the vicious Furies gang, Dai seduces everyone who lays eyes on him, only to blind them to his own barbaric nature. When an honest schoolboy named Jaehee rescues a beautiful girl from being mugged by the Furies, he can't possibly realize how this brief encounter will plunge him into a downward spiral of unbridled passion and unfathomable pain. From his brutal gang initiation to an unspeakable act committed against his girlfriend, Jaehee wavers uncomfortably between revulsion and fascination. And in Dai he finds a tender, caring friend one moment and a heartless sociopath the next, awakening strange and unhealthy desires in Jaehee that he could never before have imagined.

(Source: Netcomics)

Let Dai

Let 다이

Shimizu, Yuki

Mistaken identities, bizarre accidents and pratfalls, tragic pasts and plenty of broken hearts, and that is just for starters! Love Mode tells the story of the lives of the men involved with the classy male escort service, Blue Boy. Love lines intertwine and cross, friendships are made and broken in this boy's love classic!

Sakashita Izumi, your typical straight high school student, gets into a sticky situation with a gay translator, Takamiya Katsura, when he gets mistaken for Izumi - an escort from B&amp;B (Blue Boy)! The two go on a date, Takamiya goes all the way with the young Izumi, and now the older man's in love with him. Tiny Problem: Izumi is slightly homophobe. Will he eventually convert in that which he fears?

Reiji, owner of B&amp;B and other sleazy clubs (and seemingly not gay) finds out his girlfriend had been cheating on him - just after dumping her. He bumps into a young, family-less, money-less, trustless high school named Naoya who at that moment gets knocked out by a pot that Reiji's vengeful ex-lover drops on his head. Reiji accompanies the young boy, feeling bad that this is partly his doing, only to find that now Naoya is homeless since his apartment burned down and finally ends up taking in this "stray cat".

(Source: MU)

Including one-shot:
Volume 10: The Reason I Touched Teacher

Love Mode

ラブモード

As winter draws to a close, German boarding school student Thomas Werner dies one morning. He leaves behind a single letter addressed to his fellow student Juli that reads "Here is my love. Here is the sound of my heart."

With his faith shaken to the core by the words, the scholarly Juli sinks to the depths of despair. His cynical roommate Oscar finds himself watching over Juli's fragile mental state while keeping his own feelings for Juli under wraps. Then new student Eric enters the school - and he has an uncanny resemblance to the deceased Thomas...

Thomas no Shinzou

The Heart of Thomas

トーマの心臓

Ragawa, Marimo

Police officer Kain Walker has gone to great lengths to prevent his coworkers, family, and friends from finding out he's gay. But when Kain meets Mel Fredericks, he realizes at once that his whole world is about to change. For the first time Kain wants more than a one-night stand, but a relationship carries risks, discovery not least among them. Battling with others' expectations and biases—and his own—Kain struggles to balance his desire for secrecy with his feelings for Mel at a time when being out could cost him dearly...

(Source: Yen Press)

New York New York

New York, New York

ニューヨーク・ニューヨーク

Yoshihara, Rieko

Michihara, Katsumi

Nagato, Saichi

In the future, on a distant star lives a new society. Ruled by a computer system, named Jupiter, men are divided into classes based on their hair color. The Blondies, genetically altered by Jupiter, are the highest class and occupy the capital city of Tanagura. Those with black hair, Mongrels, are forced to live in the slums, Ceres. Iason, the leader of the Blondies, encounters Riki, a mongrel, in the streets of Ceres one night and sets out to own him.

(Source: June)

Subtitles for the individual volumes are as follows:
1: Stranger (帰って来た男)
2: Destiny (命動)
3: Nightmare (刻印)
4: Suggestion (昏迷)
5: Darkness (長い夜)
6: Metamorphose (衝動の引き金)

Ai no Kusabi

間の楔

Kodaka, Kazuma

Three's a crowd. Ranmaru and Kei have a strong and passionate relationship built on years of trust, sacrifice and love. When the mysterious son of a Yakuza boss starts to have designs on Ranmaru's affection, tempers flare, and hidden emotions rise to the surface. Will Ranmaru and Kei's love for each other be able to survive this difficult test, or will the emotional conflict finally come to a head?

(Source: Be Beautiful)

Kizuna

Kizuna: Bonds of Love

KIZUNA

Matsushita, Yoko

The business of Death is never done. Asato Tsuzuki works as a Shinigami, or "Guardian of Death," in the Ministry of Hades. It's his duty to make sure that the souls of the dead reach the afterlife, but contrary ghosts and humanity's evils keep getting in the way of a job well done. With all these problem assignments, will he ever get a bonus...or will he be stuck paying back damages for all eternity?

(Source: VIZ Media)

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