From ShoujoMagic:

A low-price, high-quality apartment in the metropolitan area of Tokyo is nothing short of a miracle! It exists, but there's a catch -- tenants must be good-looking and pass an interview by the landlord!? This is a love comedy about what happens when the beautiful people are all gathered under one roof!

Based on Mainichi Seiten! (Novel)

From Peccatore Sanctuary:
On a particular night, an unexpected guest suddenly turned up outside science fiction magazine editor, Obinata Taiga and his family's home! The person was actually Asuoo Shuu, who had married their elder sister; the dictator of the family, and since became their brother-in-law. What's even more incredible is that he is not only the writer that Taiga is responsible for, but was also Taiga's high school classmate! But, just when everyone was vehemently expressing their objection to Asuoo, they received news that their all-important sister has gone missing! Out of ideas, Taiga had no choice but to let Shuu stay on, they could only wait until their sister comes back to decide everything!

Mainichi Seiten series:
Vol 1-2 Mainichi Seiten
Vol 3-4 Kodomo wa Tomaranai
Vol 5 Children's Time
Vol 6-7 Kodomo no Iibun
----Aki-chan no Iibun
Vol 8 Isoganaide
Vol 9-10 Hanaya no Nikai de

1) Lost Children
Koyo Tomohiko and Fukube Naoto are childhood friends. But when Naoto gets a girlfriend and doesn't have much time for Tomo anymore, Tomo's pissed! But is friendship the only thing Tomo feels?

2) Diamonds are Forever
Taki Chisato and Kamitori Taichi have been goofing off instead of studying. Now their tutor, Taki's cousin Atsushi, is punishing them for wrong answers... by making them kiss each other?!

3) Continuation of Diamonds are Forever. Chisato and Taichi are dating, but Taichi wants some of the physical benefits of dating.

4) Golden Star
Third year junior high student Murakami finds himself watching stoic classmate Takahashi play the piano every year for their school chorus. But Murakami really likes Takahashi's voice and wants to hear him sing.

5) Flower Scented
Mushano Kouji is a master wizard who teaches magic to children. But when 36 year old Sakurada Tsukihito asks to be his apprentice, Kouji doesn't send him away. Sakarada is hopeless with magic, but great with housework, which is just what Kouji needs, but why does this man want to learn magic so badly?

Maico is a charming young woman who also happens to be an android. Her creator built her to revitalize the flagging ratings for her radio station, as well as to probe the intricacies and weaknesses of the male libido. Maico quickly becomes entangled in a very human love triangle, not to mention the scandal and intrigue surrounding the station, its competitors, and the hordes of adoring fans that this sexy new personality attracts.

The first three stories are about 3 brothers. 1) The eldest brother, Shunpei, picks up a prostitute boy in order to refuse an arranged marriage by his grandfather 2) No One But You The middle brother, Takashi, makes his old temporary lover enter his father's company 3) Body Guard The youngest brother, Tomoaki, loves his manservant. The other three stories are unrelated : 4) Bluish Spring The professor who invented the medicine of "rejuvenation" tells his student of his feelings 5) Sea Turtle Ping Pong Tale Romance in the high school ping-pong club. 6) Family A homosexual couple with a kid looks back over the past of their youth. Additional story (extra from the first 3 stories) : The Suffering of Kirishima's Chairman ~ Pgs. 25-31 New year's family reunion, from the grandfather's point of view.

A school mahjong story about the everyday life of middle schooler Asakura Yoshiaki, his classmates, teacher, underclassmen, and the other members of the mahjong club.

Sherbet Lemon and Covenant of Darkness:

The snow mountain is his territory, no one is suppose to live there! Who is this daredevil?! How dare he chop off my favorite gingko tree. To make it worse, he took all the furnitures in my cave! Darn! I won't be a demon fox if I didn't take revenge! But... he's just an idiotic scholar, why can't I get close to him? When the mischievous but innocent snow fox meets a slow yet scheming scholar, the truth isn't what Xue Qiu expected.

From Aerandria Scans:
In this grim and realistic take on classic fairy tales, Prince Ludwig, a female corpse collector, is ordered by his father to find himself a wife more suitable than the women he often brings into the castle. Along with his servant Wilhelm, they travel across the land in search of fair maidens from classic stories in hopes of finding Ludwig a wife.

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 BL fangirls.

Takaguchi Satosumi's first BL work.

Based on DS Dating Sim "Love Plus"

Based on DS Dating Sim "Love Plus."

From Shoujo Manga Maniac:

The very modern tale of a girl named Yun, with a penchant for picking the wrong guys to fall for...and the bad boy, Hiromichi, who may just be good for her after all!

From Obsession:
The students always call him dark, dirty, scary so science teacher, Fuwa Tsutomo, couldn't show his true identity as a good-looking man. Yet he had liked a student, Kurusu, who was failing science. So in order to help and be with Kurusu, even if it's just for a while, Fuwa changed into the "Phantom of Science" and be a private tutor for Kurusu. Unfortunately Kurusu's friend revealed his secret, but still Kurusu didn't care; he only hated Fuwa, not his "Phantom"

In the Lovely Lesson series:

Vol.1 - Lovely Lesson
Compared to other girls at your school, do you think you're ugly? No matter what you try, you never become as pretty as them? Or were you dumped because you weren't pretty enough? No matter what the reason, there is a way to heal you. Meet Yuhri, a "beauty healer" who really is just a high school goods storekeeper. But when Yuhri meets another "beauty healer" like her, Makoto, what will she do?

Vol.2 - Chuukyuuhen
The first story is about a girl who is always called fat and ugly by a cute guy. To make him say she is cute, she tries hard to look pretty.

Vol.3 - Hair Make-Up Hen

From Viz:

Risa Koizumi is the tallest girl in class, and the last thing she wants is the humiliation of standing next to Atsushi Otani, the shortest guy. Fate and the whole school have other ideas, and the two find themselves cast as the unwilling stars of a bizarre romantic comedy duo.

Lovely Complex Plus is actually volume 17 with the final chapter called Love Com Final. The first two chapters are about before Koizumi Risa and Otani Atsushi met each other. The third chapter is about their first encounter and a little bit of what happens to them after the ending of Lovely Complex.

*Contains a side story called Hoshi ni Natte mo Aishiteru (Even When I Become A Star, I'll Still Love You) in vol 12:
Reina wakes up surprisingly in her boyfriend's room. But it seems that she passed away three days ago...

In 2004 Lovely Complex received the 49th Shogakukan Manga Award for shōjo.

From Fantasy Shrine: A collection of sweet, cute BL one-shots. Nothing too explicit. Ch 1 - Making Love Ch 2 - Only Have Eyes For You Ch 3 - Love's Holiday Ch 4 - Just Take It Easy Ch 5 - Force of Love Ch 6 - Jealousy Baby Making Love extra - Full House of Love Koi no Myouyaku continues chapter 1's story, Making Love.

Kouji's mother has just remarried, and as a result, he has a brand new father and two unbelievably beautiful twin brothers. In order to get to know his new family better, Kouji transfers to the same private school that his newly acquired step-brothers attend. But when Kouji finally meets them, the two have completely opposite personalities! And it seems like one of them is intent on being more than brothers!?!

A girl realizes that real-life isn't always like the love story manhwa she's read...

From DMP:
Tomonori Ozawa has just landed a job at a large publishing firm. The only catch is, he is the new editor of a Boy’s Love magazine?! On top of that, he is stuck with dealing with the artist Sakurako Kakyoin, a male yaoi artist who is notorious for missing his deadlines. To become a full fledged editor, Tomonori-kun has to start from the bottom – checking drafts, editing scripts and lettering. Now if only Kakyoin-sensei would stop sexually harassing him, he could actually get some work done!