From Blissful Sin:

Despite his best efforts, Akiyoshi Tooru has fallen for the very beautiful but sadistic and perverted demon, Naruse Fuuta. Not only do they attend the same university, they’re now living together! Though Akiyoshi has always tried to be careful about their night life, he never expected Naruse to stop touching him altogether, and then all of a sudden, Naruse is in an accident and reverts to his adolescent self!

Chapter 8 was part of the Drama CD Special for Scarlet

Volume title can be translated to "Lovely Demon" or "Lovely Devil"

From MangaHelpers: First-year high-school student Sakamoto isn't just cool, he's the coolest! Almost immediately after starting school, he began attracting everyone's attention. The girls love him, and most of the boys resent him. There's even a boy in the class who works as a model, but who is constantly upstaged by Sakamoto! No matter what tricks the other boys try to play on him, Sakamoto always manages to foil them with ease and grace. Though Sakamoto may seem cool and aloof, he helps others when asked, such as in the case of the boy in his class who was being constantly bullied. No matter what difficulties Sakamoto encounters, he moves through his high-school life with confidence and class! [tethysdust] In volume 1 is included the one-shot: Katahaba Hiroshi.

The story of the protagonist, Tomoya, and his everyday life with his girlfriend Yuiko-san.

The leading lady here is a girl called Ume-chan, who is suffering from an unrequited crush on a boy in her class. His name is ISEZAKI-kun. He sits directly in front of her, and she spends a lot of her time observing him and writing down her thoughts in a little notebook devoted entirely to him. Ume is fairly comfortable with her situation of loving him from afar (well, from one seat behind). After all, there is no hope for her. Isezaki-kun has a girlfriend who is pretty and nice, and practically perfect. He seems to really like her. So Ume spends her time writing about him instead.

Naturally, this situation can’t last for long, and sure enough, things change when Isezaki forgets his notebook one day, and asks Ume if he can borrow her notes. Ume, totally dazzled that Isezaki actually SPOKE TO HER, hands him her class notes… only to realize she gave him the wrong notebook! Before she can grab the notebook back, Isezaki-kun is reading the notebook about himself. He quickly realizes what it is, and is understandably surprised. Absolutely mortified, Ume grabs the notebook back and runs from the class. Oh no, now everyone will know, now Isezaki knows, oh, what an embarrassing mess!

Surprisingly, Isezaki is actually a nice guy, and he handles learning about Ume’s crush rather well. He isn’t mean or anything. He takes it all with good humor, and even decides to be friends with Ume! But this is sort of pleasure and Pain for Ume. On one hand, she gets to actually speak to him sometimes. On the other, it sucks being close to a guy who you really like, knowing he has a girlfriend. But wait, what’s this? Isezaki has broken up with his girlfriend? can it be true? Or did she break up with him? Does he still love her? Could this be Ume-chan’s big chance? Isezaki knows she likes him, can she convince him to like her back?

Included is the oneshot: Nanairo Closet.

"Wizard's Soul" is a competitive trading card game famous the world over (based heavily on a certain real life game with the intials M, T, and G). Skilled players are popular, make a lot of money, and are even offered acceptance to prestigious universities.
Follow the story of Manaka as she struggles with love, money, and friendship in a world run by cards.

With the passing of the her grandfather the Eisei Meijin whom she'd spend most of her childhood together, Ayumi lost sight of her goal. On the other side, Erika who's aiming to become a pro at Shogi to pay the dept her father left with them after running away. Right after entering high school the two meet at the on thing they shared in common, the Shogi Club. Find out how their story unfolds as they go through life centered around Shogi!

Despite being good looking, all Hiraoka Tatsuya ever wanted was to lead a peaceful and ordinary life. However his life turns upside down with the addition of a new student, Suruga Daichi, a famous actor. As the Student Council President, he is assigned to look after him. What will happen to him now...?

Ataru Natsumeda is withdrawn in his first year in high school, unable to rise above mediocrity. His parents are on bad terms with each other, so Ataru leads a lonely, gloomy life. On top of all that, his sister Tsukimi is endowed with both wit and beauty, which causes Ataru to have a severe inferiority complex from living in her shadow.

Ataru gets bullied repeatedly by delinquents who are after his beautiful sister. One day, his classmate Nirasaki witnesses this, and asks Ataru, “Why didn’t you just tell them to piss off and die?” Soon after, she passes the mysterious “wishing stone” to Ataru with a kiss, as if she’s restraining him from asking any further questions. Rumor has it that this “wishing stone” can make any wish come true!

Having obtained this stone, Ataru wishes for the delinquents to die! And within a moment, the three delinquents die bizarre deaths!! What is this “wishing stone” …? Who is Nirasaki…? And what will be the fate of Ataru Natsumeda, who has set foot into this horrible world…?!

Paradise Gakuen's annual competition Miss Paradise is coming soon! But a major incident occured: one of the girls hoped to be a contestant, Chihiro, had her precious part seen by a boy! Chihiro who holds a principle that she won't let anyone other than her husband to see her naked, wants to become Shiba's wife. Because the latter didn't believe her intention, she decides to prove it, by entering the annual competition!

From Chibi Manga:

Chii, who's like a hamster, is always with her neighbor Ikumi-kun who's like a snake. Today she looked at him and understood that he will never let her run away...

While walking around the streets, Momose stumbled upon his classmate cross-dressing as a girl. Ever since then, he couldn't help but to take notice of him in school..?

With the Meiji Restoration and the abolishment of the Samurai system, the once feared and respected ninja were forced underground, to continue their work in absolute secrecy. In modern times, the descendants of a certain ninja clan have continued their ancestors' legacy by employing the ninja arts in their work as bodyguards for the rich and famous.

Kirio Mikage is the daughter of the CEO of "Shadow Village Company," a private security company that operates as a front for the clan's ninja activities. For as long as she can remember, her father has been training her physically and mentally to be a ninja, drilling their clan's mantra into her head: "Be a shadow." Ever since she was a child, Mikage's only source of comfort and encouragement has been her employer, James G Rod. Rod is a kind, handsome and mysterious British businessman who is using Shadow Village Company's ninjas for his personal security and who, when Mikage was only about 10 years old, requested that she be assigned to complete her apprenticeship as part of his security team. His wife, whom he loved dearly, was Japanese but she and the couple's daughter were killed by Rod's enemies prior to him hiring Shadow Village Company to see to his personal security.

Rod seems to regard Mikage as a stand-in for the daughter he lost, whereas she is half in love with him as the only person who has ever shown her kindness. One day, Rod asks Mikage to let him adopt her and send her to school in Japan like any normal teenage girl, so she can lead a happy life. Mikage is troubled by his offer because of her feelings for him and the fact that the penalty for any ninja who turns their back on the clan is death. But before she can decide, Rod is killed in a bombing. Mikage finds out after his death that, before he was killed, Rod paid Shadow Village Company a sum equal to her entire lifetime's wages in exchange for her freedom from her obligations to the clan. In honor of his memory, Mikage decides to fulfill Rod's wish for her and returns to Japan to attend high school there.

This is the story of ninja Mikage's life as a normal high school girl!

It's a different world where puberty is the result of a butterfly-like metamorphosis rather than simple growing up. Sometimes it goes wrong...

The Last Uniform, also known as Our Last Season, is about a girls' boarding school. The school is in decline, with thirty-two of the fifty rooms in the dorm left empty. Nonetheless, the school's rules are unchanging and absolute. One of the rules is "room sharing," that is that each room in the dorm is meant for three people and there must be three people to a room, regardless of how many rooms are left empty in the school's current state.

This is the story of the girls in that school.

Bori Kim's grades are suffering from her constant doodling in class. However, once her drawings catch the attention of a startup game developer, she finds herself with a new job as an illustrator for a dating sim, as well as developing a romance of her own...

From Manga Art:

Ichinose Hime is the daughter of the Prime Minister of Japan, and because of this, she has been unable to lead a normal school life. Hoping to hide her title and lead a normal high school life and get a boyfriend, she moves to a high school far from her old school. However, after going through all of this trouble to cover up her identity, a boy named Kirihara Natsuno finds out her secret. Unfortunately for her, he isn't so willing to keep the secret if she doesn't pay up. Will Hime get to live out a normal high school life as she had wished, or will it be a repeat of history?

1-3) A student, Fukuoka, finally tells his feeling to his classmate Amano. But did Amano really hear it or not?

4-6) Tired office worker with acrophobia finds someone who is going to committing suicide on the roof of the building. He takes the guy to his house and becomes intimate with him but can't accept his love. Then the guy suddenly vanishes and our hero climbs up the building to find him again...

N/A

From Paperdolls Project:

On Monday, we gaze into each other's eyes. On Tuesday, we hold hands. On Wednesday, we hug each other. On Thursday, we kiss. On Friday, our feelings will be revealed.

From Yaoi Desire Revolution: Nao, the introverted prodigy of the department, trembled upon hearing the handsome Kouji, who has an inseparable relationship with him, discussing his problems. The thing is Kouji is an ass “hunter” who can’t stop feeling sexual arouse when seeing beautiful ass❤ After devouring almost all of the girls in university, he began hitting on Nao, who has a beautiful round ass despite being a man! This book includes the following stories: 1) The Cafe Called Love 2) Suki Dakara Itte Hoshikunai 3) Urge to Molest 4) Spring Comes to the Cafe