Kamiya, Yuu

Meikyuu Series or commonly known in Japan as Kyou &amp; Ippei Series is a long running detective manga with 4 main characters trying to solve the cases that they have to get involves.

Instead of number of the volume, each volume of the manga has its own name.

Kyou & Ippei Series

京&一平シリーズ

CLAMP

A series of doujinshi from CLAMP's early years. It contains a number of original comics, short stories, spin-offs, and extras based off some of their early works, including CLAMP Campus Detectives, RG Veda, and Tokyo Babylon.

Shoten

笑点

Motoni, Modoru

A story about two men that have been best friends for years, knowing the fact that they have feelings for each other, and ignoring it. They discovered it on their college days and settled the matter with a time limit; if they hold the same desire years later they will do something about it. Now both of them have girlfriends, but it seems that their desires only grew stronger, in spite of loving their women. So, what happens when their girlfriends agree to make them indulge in their desires?, and have a relationship only between the limits that desire allows them...

This is a bet, to know what is stronger, love or desire?

(Source: Queen2408)

Koi ga Bokura wo Yurusu Hani

恋が僕らを許す範囲

Takaguchi, Satosumi

High school delinquent Mura must put up with the annoying presence of new stepbrother Subaru when his mother goes away on honeymoon. Dealing with gossip at school is bad enough, but Mura's life is turned upside down by a forbidden locker-room kiss and the publication of an incriminating photo snapped by shounen-ai fangirls.

Takaguchi Satosumi's first BL work.

Lucky-kun

Fortunate Boy

幸運男子(ラッキーくん)

Takagi, Ryo

A spin-off oneshot of Ousama Game, involving, yet another Prince (5th) ... and, of course, a Pirate... 
(Source: DokiDoki)

Kaizoku Game

COGA, Mayumi

A collection of 11 oneshots from Coga Mayumi, including Hibi Kira Kira: 

It’s summer holidays for Tomoaki and he is helping out at the daily morning exercise for kids. But recently, he notices that a young man living beside the park has been looking at the exercise group every morning. Is the young man a Lolicon that is targeting his kids, or is it entirely something else? 

(Source: Echochi)

Blind of Mind

ブラインド オブ マインド

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

Yumeka, Sumomo

A story about a rebellious, young man with unimaginable beauty named Hana who dreams of being a swordsman. Due to his beauty, his mother has other plans for him, so he leaves home to become a swordsman like Soyogo who slayed 14 people. Amongst the guards, he meets an enigmatic youth named Hijiri who lives without knowing joy or sorrow. A sweet story about two young men, their dreams, and their blossoming love.

(Source: Psycho Pandas)

Hoshi yo Oka yo Fuyu no Ao yo

ホシよ丘よ冬のアオよ

Higuri, You

When they were just kids, Hiro and Kaede were separated because Kaede went to America with his divorced mom. He promised he'd come back—and one day he does. Hiro has always missed him, but this Kaede looks and behaves nothing like the one he knew back then. 

(Source: MU)

Boyfriend

From mangaupdates.com:

Aida Rendou, ex-student and would-be poet, struggles to earn a living in the big city. As a talent scout for the adult video firm, M+ Productions, he hunts for potential actresses but it's not enough to pay the rent. So boss Nanazuka offers him extra cash to use his body to seduce men and women alike. Michiru, a spoilt young woman with Yakuza connections, comes up with what appears to be a perfect solution: she'll be Rendou's patron in return for him working as her full-time host. Will Rendou finally be able to write his poetry? Or will he end up corrupted by the amoral dog-eat-dog world around him?

Shijin wa Ichinichi ni Shite Narazu

詩人は一日にして成らず

Oumi, Shinano

A story about the Sexual Harassment Punisher, Sakakibara, and his assistants - how they ‘punish’ those around them. Some comedy and BSDM themes, plus drama and action.
(from B-U)

Sekuhara Shiokinin

Takagi, Kanako

One day, Fujiki transfers in to Hayase’s class, and suddenly steals a kiss from him. “What are you doing?! We’re both guys!” And so an adventure of love begins, featuring a male princess(?) and taking place in the past, present, future and even another dimension… (Source: Jmanga)

12 Manga Like Komatta Toki ni wa Hoshi ni Kike