From Fantasyshrine:

Since he first met Baron Kuroba, Seiji has been secretly in love with the master of the Kuroba Manor, where servants were rumored to be attacked by a vampire. However, Baron Kuroba only sees Seiji as a lap dog that needs to be disciplined for his carnal pleasures. How can Seiji convince the baron, who doesn't believe in love, to love him back?

This is a one-shot chapter from Oshiokiyo! an anthology of hard-yaoi BDSM borderline porn. Featuring a plot about two brothers from a small-time yakuza family whose parents are murdered by a rival family. Older brother becomes just like the enemies in the process of getting his revenge on them. Older brother-younger brother relationship devolves into top/bottom BDSM situation.

[From Nakama]

Trying to avoid being so popular with women, the legendary girl-magnet Takeuchi transfers to an all-boys school. Once there, he can’t help but wonder why Iida, who he’s known for a while, always eats his lunch early. At first he only thought him a little strange, but before he realized it, he found himself following him with his eyes all the time. The two become close by Iida sharing his bento. Being with the fun-loving Iida every day turns Takeuchi’s dull days into fun ones?! A series about the tantalizing love between a wholesome young man sharing his bento with a girl-magnet, a gorgeous masterpiece compilation including an extra, and one of the first pieces written in the name “Uchida Kaoru”!!

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.

Bard is a tough guy involved in a shady business; Sei is a tough kid engaging in some shady dealings. Through sheer stubbornness (and the fact that Sei-kun made a very, very bad hooker), Sei ends up working for Bard, and there's instant attraction.

Vol.3 in Kemono Series

Kirishima Kaoru a representative of the Fujido Groups is a cold and unapproachable beauty. Will handsome Daigou Mikihisa be able to win Kaoru's love?

It also follows up the relationship between Saijo Chiharu and Kazuki Toudou.

Vol.5 in Kemono Series

Kirishima Kaoru is the representative of Fujido Groups while Daigou Mikihisa is a young executive of American corporation Mercury. Due to his deep-rooted insecurities, Karou continuously tests Daigo's affection! And now, Karou's previous boss and lover Ian Evans wants Karou back! Who will win this struggle for power and love?

Also included a side story about Saijo Chiharu and Kazuki Toudou.

Je-hyung, who is left alone after his mother's death, quits school and starts to work. On his way home he meets a girl who doesn't seem to have any place to go and brings her to his house. She disappears the next morning, and three years later they meet again.

When he was younger, Takeshi promised to come to the aid of a "cute girl" in his calligraphy class that he had a crush on. Since then he has never strayed from Mako's side. Mako sees Takeshi as "cute as a stupid dog". Add in third wheel friend Honda, along with many other typical plots for a school romance and you have a story.

From Loveless:
Senke is a gloomy and shy man who's secretly in love with Masaharu, a mailman in the company he works for. His inability to confess to Masaharu leads him to lavish his love upon a Digital Monkey on his PC, which he names Masaharu. The recession, his low-paying job as a dispatch worker, and a demanding boss causes him to work overtime night after night. One night, fed up with seeing Senke working to exhaustion, Masahuru confronts Senke and in the process finds out about his Digital Pet. The stressed Senke breaks down and rapes Masahuru. After this disastrous incident, Masaharu avoids Senke. Senke works mindlessly and fulfills all the demands of his boss until he discovers that his Monkey Masaharu has died. In his exhausted state of mind and having a guilty conscience, he thinks this to be a sign, and dashes off to find Masaharu. When he finds Masaharu safe and sound, he is relieved and collapses.

From Attractive Fascinante:

“It’s fine if our hearts aren’t connected”, that is what Takamura sensei thought when he confessed to his student, Rin. But after a few times of bodily contact, Takamura started to desire Rin’s heart. Will Rin open himself up and accept Takamura?

Haruhiko and Kenichi are 17 year old high school delinquents who are inseperable best friends. They've a reputation around Shibuya for being guys you don't want to mess with. Lately, Haruhiko has been fustrated, getting into more fights than usual, insulting women, and ditching Kenichi. Haruhiko can't admit his problem and Kenichi is at a loss for what to do, and soon things spiral out of control. Can their friendship survive? Or will it change forever?

This manga is about a couple of 17 year old guys and is set in Tokyo’s Shibuya expensive neighborhood. They have been doing everything together ever since middle school, where they became best friends. But Haruhiko cannot stand female company anymore and begins to insult them at the place they are used to going. No need to tell that they take it pretty badly and tend to get a tiny bit furious. Kenichi tries to calm things down though. The fact is that Haruhiko has something bothering himself and he cannot let Kenichi knowing about that… (from Daily Manga)

This manga includes two oneshots:
"Tight Rope Walker"
A story involving a hair stylist

1-2) Can't Kiss for 24 Hours
A math teacher who has an intense relationship with the problem student, Kikusui Kiyoya. Even though they were a couple in love, one day, Sensei suddenly wants to break up...?

3) If I Didn't Have You
Fujisawa Yuu just moved to a new town. On the first day of school he's warned to stay away from Nanatsuki Haruki. The word around school is that Nanatsuki who is actually 20 years old will sleep with anyone, but only at school. The mystery is why he only sleeps with people at school and why hasn't he graduated yet?

From Boys On Boys Love:

1-2. 2-dome no Koi no Hajimari wa
After being harshly dumped by his lover, Kousaka Yuuki, a shop manager at a restaurant, swore that he would never love again. One day, he meets his ex again when he unexpectedly shows up at Kousaka's shop. It was then completely exposed to Matsuoka, a kouhai at work, that he dated a guy. Kousaka was shaken that his past was known to Matsuoka, and worried that he would look down upon him, but Matsuoka forcibly kisses him and says "I love you" to Kousaka...!?

3. Gekiai Honey
Sasaki Ryoutarou, a part-timer at a restaurant leading an ordinary life, suddenly met his old classmate, Mio. Mio was once a gloomy guy ignored by all, but is now a cheerful, completely changed guy. He claims to have been searching for Ryoutarou to be his lover because he couldn't forget about him, even after being rejected a long time ago. Mio changed his style because he had heard that Ryoutarou's type is a cheerful person. Ryoutarou refuses to go out with him, to which Mio responds: "go out with me for a month, if you don't fall in love with me then I'll go back"...

4-5. Honey Trap
You is in love with his best friend Shinji. Afraid of ruining his friendship with Shinji, he doesn't confess, and breaks off all contact with him. Three years later, running away from some stalker, he enters a building and asks for help. However, it turns out that the man living there is his ex-friend Shiniji, who is now a detective...

But what will happen when Shinji suddenly asks You to be his lover?

6. Bokura no Koi no Hajimari wa

- Extras
Is a small continuation about the first story.

Ikumi and Kunitachi are finally hitting it off steadily. However, trouble starts once again during Valentine's Day when Ikumi received a box of chocolates containing glass and became the victim several other pranks. In the end, when the person revealed himself to Ikumi, the past was unfolded.

Unconsciously jealous over what he's afraid to know, Ikumi threw a fit and said something cruel towards Kunitachi. Unable to take it, Kunitachi raped Ikumi...

From Beautiful Soup:

"1999" is an angsty and widely varied series about a bunch of teenagers. One of them is the son of a drug lord and so as you can imagine, all sorts of shit goes down, surrounded by a backdrop of convoluted and fluctuating interpersonal relationships.

This is a plot heavy manga with some mildly-explicit sexual activity.

MAL:
This plot takes a new twist to Romeo and Juliet's forbidden love. It's July 7th, 1999 in Shanghai and there are two gangs fighting for control. Only in the ceasefire zone do people live in peace. In a chance meeting Xiaoxue, who is part of the Toulon's gang, and Dawu, from the Xianglongji's gang meet by chance and without knowing they are enemies. In the heat of the moment Dawu takes him to a place he has the keys to in hopes Xiaoxue will join him, but is turned down. With a simple kiss he leaves Dawu not knowing they will meet again, but in very different circumstances

1) Water Breath
An injury destroyed Olympic hopeful Ryuji Hayashida's promising swimming career. He was transferred to a university where he believed no one knew who he was, but he was wrong. There was someone who recognized him the moment their gazes met at the university's swimming club.

2) Pension
A tempestuous tale of a rock band and the consequences of their enigmatic guitarist's return. It didn't take long to realize he has a keen interest in their lead singer.

3) Dance
Shachi never got over his feelings for his classmate Michio who jokingly danced with him at school. Years after their school graduation he discovered what Michio did for a living. The discovery inspired him to sell his father's car for one night with Michio, which turned into a different kind of dance.

4) Longing
Shy and timid high school student Sakaki has always watched his classmate Ryoji from afar, but he wasn't as invisible as he believed himself to be.

From Basement Leisure:

Kazuma is a shy high-schooler who happens to be gay, and in love with a popular and handsome guy,Ayase! A while later, Ayase befriends Kazuma, having found out that Kazuma is gay, and admits that he too is gay, and has the same feelings for Kazuma! Yet all Ayase does is have sex with Kazuma, causing Kazuma to feel insecure, will this relationship work out, or will Kazuma's and Ayase's heart fall apart?

Izumi starts high school on a low note. For some unknown reason, rumors refer to him as the notorious Izumi, a thug who loves to fight. The truth is dramatically different. Izumi is the housekeeper for his widowed father, and spends his after-school free time doing the shopping, cooking and cleaning. He doesn't have the time or energy for friends, so his bad reputation actually is useful.

But what is the problem with Segawa and Sawatari? Why are the school idols always being so friendly with him? Don't they know about his reputation? What sort of friendship do they have in mind anyway? Why does Izumi start to feel like a ham-bone caught between two hound dogs?

From Forever More:
First-year high school student Yuka happens to see his amazingly handsome neighbor kissing another man. However, he learns that the handsome neighbor is his math teacher. Having fallen in love at first sight, Yuka struggles to attract Gotou's attention, but Gotou restrains him with an, "I have no interest in kids."

Also contains a oneshot called Kabuki machi no Otoko (The Man from Kabuki City).