From Shoujo Manga Maniac:
Nadeshiko's parents have already decided for her that she will marry Yamato. Her parents even make them live in a room together to develop their feelings!

Includes two one-shots:

Hug Me Tight: Nari has insomnia. When she finally falls asleep in the infirmary, she finds out it's because she was hugging Oshino. Will she accept later Oshino's offer of being her pillow?

Loving by Fingertip: Wakana and Touro are good friends. Although Wakana likes Touro, she doesn't want to destroy their friendship.

From Nakama:

A master chef and the owner of the bar where he is about to begin working at, are actually high-school classmates. In the past, they had shared a kiss, the scent of flowers still clings onto the owner's body... The master chef who thinks about the past, is carrying complex feeling everyday?
Also, the owner is someone with his pheromones on high, and super popular with other men that one night, he was attacked by an unknown stalker! Decadent wine and love stories between adults...

Maeda Hachibei is unlike most guys, who lust after gorgeous girls. This pervert lusts after their discrete parts, instead. When he moves to Tokyo to attend school, he finds himself living in a dormitory with five girls, each of which possesses one of the ideal physical features he desires: gorgeous blue eyes, bullet-train breasts, a deep dulcet voice, straight “anime-esque” legs, or a waistline shaped like fine Japanese pottery. How can he manage to keep his wits when surrounded by these women? If you think this sounds like a Love Hina clone, you wouldn’t be entirely incorrect… but Hachibei isn’t Keitaro.

Includes a oneshot in Vol.12: "The Boy Who Heard Too Much".

Love Allergy is about a girl whose name is Hitoe. Her father is an extremely famous artist and Hitoe has the same passion as her father as well. She has God's skill when it comes to drawing and painting, but Hitoe herself decides to quit drawing. It is because her heart is broken. Hitoe's teacher who is also a famous artist and a friend of her father is going to get married, and she loved him more than anyone. Considering the fact that Hitoe is at a very sensitive age, she decides to give up drawing which attracts her teacher, Nakada.

From Crimson Moon Scans:

Liking the worst possible person...... "If you love me, you will fufil my wish, right?"
Yui confesses her love to Hiro who hides a dark personality...

From Intercross:

1-3) Koakuma Lion
Uno and Reo are neighboring childhood friends. One day, a friend tells Reo that he should become a model. Now, they are high school students, and Reo has become an extremely popular model... yet he acts like a spoiled child around Uno!

4) Renai@Home
Ren and Ai are childhood friends as well as neighbors. Will their relationship change when a young girl claiming that she's from the future show up begins calling them Papa and Mama?

5) LIFE+B
Sonoda Mio has always been such a tomboy at school but when at home, she works in her family's flower shop. Her family's VERY GIRLY flower shop. Mio doesn't want anyone at school to see her all girly, so when someone walks in, wearing the school uniform, she goes and hunts him down the next day. But when she tells him not to tell anyone, he....!!?!

There is a Legend about a guy named Kang Do-Young. He is perfect, he is great at sports, he is rich as well as good at fighting. That guy is also the current Jjang of the school. And now that guy likes Namire. A girl who is in a club called 'Pink Lady' and that also wants to be Jjang of her whole school. But she wants to fight Do-Young and defeat him so she can be the new Jjang. To bad Kang Do-Young doesn't want to fight since he likes her. What will happen will she ever defeat him and become Jjang or..........?

From Endless Abyss:

The Law of Ueki plus takes place 2 years after the end of The Law of Ueki, everyone has gone there own way and life has become peaceful again until one day Ueki saves a dog only to stumble upon a plot to steal the memories from all the people of earth. Ueki as the only person who did not have his memories taken, must go into a new world and retrieve the stolen memories where new allies, foes and powers await.

A group of powerful beings called tenkaijin are holding a special tournament. The rules of the game--each tenkaijin selects a kid in junior high to be his champion and grants him a special power. The kids take each other on in heated battle, but if they hurt innocent bystanders, then they lose one of their natural-given abilities. Every time they win a battle, they gain a new ability. The ultimate winner of the tournament is granted any power of his choosing, and the tenkajin who he represents succeeds in becoming the next god. Kosuke Ueki has been chosen to fight in the tournament. His special power--the ability to turn garbage into trees.

From Forbidden Garden:
Chaos and mayhem is afflicting Yoshida Akari's school. There is a ruthless bloomer thief on the loose-and no one is safe!
But on a more serious note, Yoshida Akari's best friend, Hayakawa Maiko has been missing for 3 days now, and it seems as though no one is making any head in the investigation. So, Akari decides to take things in her own hands and questions the last person who was with her best friend, Student Council President Morishita Natsu. He quickly gives her the brush off stating that he is too busy with the bloomer incident.
Who is this mystery thief and just what exactly has happened to Maiko?

1) Atelier
Art student Ritsu takes on Tagami, a teacher with a bad attitude.

2) Mad Dog Breeder
Kusugawa wants to discover what his coworker Oka means when he says he get "desperate" when he drinks.

3) Longing for the House Guest
Haruka and Jun are roommates and novelists. After Jun's sloppy housekeeping causes Haruka to injure his hands, guilty Jun needs to help Haruka any way he can.

4) White Snow, Black Wings
Ex-prostitute Mizuki and mafia assassin Katsuhiko are on the run from their former bosses, but Katsuhiko is sick.

5) Milk
A young man has a guy who wanders in and out of his life like a cat.

6) Twilight Amusement Park
Teacher is dating his student, Yoshii, who wants to quit school and work in an amusement park, but Yoshii's family wants him to study abroad.

7) Haruhi
His young patient dying of a mysterious illness, a doctor takes him on a trip to the sea.

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?

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.

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"

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.