DMG:

Be it a sudden, painful revelation or a slow ballad, second love carries the hope of happiness again. Two tales of love experienced twice unfold in Want to Depend You.

A professor of literature has died, leaving his son Yamato and his assistant Onodera to put his affairs in order. To Onodera, Yamato constantly echos his beloved professor; his grief grows desperate. Will Onodera’s past memories consume his chance for future love and break Yamato’s heart in the process?

Ten years ago, friends Yuuya and Arata became lovers, but their crushing love died as soon as it began. Yuuya fears the past will repeat itself... but could a song feel different when it’s played a second time?

English publication via Renta!

Collection of short stories:

1-3) Kinjirareta Taion
When Detective Moriyasu breaks up a lovers' spat on a street corner, he doesn't expect to know one of the guys. Kazuki is a troubled young man with nowhere to go, so Moriyasu takes him in. But the past has ways of catching up with them.

4) Naisho de Scandal
Kenjou is a beautiful model, but he doesn't like being considered girly. So when he gets into a argument on the street and a stranger stands up for him, he loses his cool. But he also loses his cell phone...

5) Kamen wo Hazushite
Yamashita is regularly scolded by his boss, Natsume, whom he has a crush on. But when he sees Natsume kissing another man...

From Fantasyshrine:

1-2. King & Prince
I, the “Prince”, as haughty as my nickname might suggest, am actually still a virgin! And the only man who can falter my cool façade is the “King”…!! I wonder which of us will come up on top in the “Big Two” battle on campus!?

3-4.Not Because I Want to Be Your Friend!

V.2 - Kaiser

Hayato and Atsushi are two men and are known around campus as King & Prince. The truth is Hayato is doing it with Atsushi… as much as Atsushi would allow him! However, the outwardly boisterous Atsushi revealed his love struck side only to the legendary womanizer Kaiser…!!

5. Harem

Story 1: A girl's father is caught red-handed for fraud. As a result, she is forced to move into the home of the director of the company. Little does she know, that this man is a true pervert, and thus begins a horrible nightmare... Story 2: The director of the school invites four male students to seduce her daugther, their classmate. The winner gets a set future. Who will win?

From Chibi Manga:

She's always taking the same train when she goes to school and in that train there's a boy with such a beautiful smile. She doesn't know in what school he goes but she's so attracted by his smile. And one day, the train suddenly stopped. That's the start of their love. You will see the first steps of a love between adolescents.

From Midnight Scans:

1) Simple Kiss by WATANABE Ayu
Once in a while, we kiss in secret. We are not lovers. We’re just “friends who kiss”. This was supposed to be a simple relationship, but…

2) Guruguru Pon-chan Okawari by IKEZAWA Satomi
With a miraculous invention, a small dog (male chihuahua) turns into a human! This is the interesting story of Sakura (human female) and a chihuahua living together!

3) Akarui Mirai by MIYOSHI Maki
To Sensei, I’m just a “student”, but to me, he’s a “man”. Although it’s not a love that is permitted, will this feeling of love that I have for Sensei ever reach him?

4) Goodbye, Friend by KUMAOKA Fuyu
Kyoko was confessed to by the guy her best friend likes. Although her friend is very important to her, and she definitely doesn’t want to lose her friendship with her, she can’t bring herself to break up with him…

5) Kimi ni Tsugu Ishiko
July 7th. I dye my hair and turn into my dead twin brother. Both my twin brother and I loved the same girl, and I can’t tell her the feelings I have for her because it is the punishment I gave myself…

Amano Sui has one serious problem: she falls in love (and out) for cute guys too easily! When she shouted she wanted a boyfriend the quiet guy Matsutani confessed to her?! Naturally she turned him down since he is not her type, but is that the really right choice Sui?

From Girls' Generation Scanlations:

A series of one shots.

1.) If you Were:
Fujisawa Yuuji, moves from Tokyo to a little village, because of some personal reasons. Yuuji is tall and good looking, making it easy for him to pick and choose his girlfriends. However, on his first day at his new school in the country, he spots a red-headed boy that stands out from the rest. Who is this boy and what's his secret? Will Yuuji decide that a boy is better than a girl...

Kimikiss Sweet Lips is a collection of one-shot stories that tells about the relationship of an ordinary high school boy named Aihara with the 9 heroines from the Kimikiss series. This manga is from the same game and anime adaption.

An entertaining webtoon featuring the lives of the members of a thriving cafe.

Collection of short stories:

1. Hoo ni Shizumu

2. Kimi wa Chiisana Kesshou (You're My Small Crystal)
Kaho puts on a facade in front of everyone, hiding who she truly is, in other words lying to those she cares about in order to make them feel at ease. One day she meets a boy at a social gathering who sees right through her and helps her change...
- Fate

3. Wagamama ni Dakishimete

4. Yakusoku ga Kimi wo Yaburu
Aina and Tooru are childhood friends who made a promise to always be siblings. As the years pass, Aina?s feeling for Tooru turned to love but Tooru became cold and distant. Will either of them be able to keep their promise?

From Rebellious Love:
Mizukoshi gets to sit beside Hidaka this time, he's cute and popular, how lucky! Mizukoshi can't help falling in love with him, but he has a girlfriend! What's Mizukoshi going to do? Includes a few other cute short stories.

When it's love at first sight, your beloved sparkles right? Love makes everything sparkle...

A kiss is shared with her kouhai, Hasumi-kun, through a game of Kings?! What will result from the throbbing of hearts that they experience together?

Contains 3 oneshots:

1) Kimi wa "Suki" no Daimeishi
From Midnight Scans:
I didn't think you'd still remember me once you'd gained fame. When you're supposed to pick me up, you don't even think to come.
That's why, when there's someone who even slightly resembles you...
Ten years ago, you left me to become a kabuki actor. But I still remember the promise from that day... You have become famous and are called "the most beautiful high school student in Japan". I'm living in a different world from you. That's why you won't even think to meet me once again...?

2) Hetakuso Kata Omoi (Hopeless Unrequited Love)
All Yuri wants to do is talk to her crush in her art club, Yano-kun, yet she's able to do anything but. Getting an idea, she asks Yano's best friend, Kimidzuka, for some tips on how to make her ideal for Yano. Though reluctant, Kimi-kun helps out...

3) Towa ni Nemure (Eternal Sleep)
Jin's just a lowly pirate with an incredibly handsome face and loves playing with women, but this annoying female brat, who he was going to sell as a slave with the rest of them, somehow feels different from everyone else.

From Peccatore Sanctuary:

The cheerful and open high school freshman, Nakazato Haruka has fallen in love! With his classmate - basketball's club Tajima Kaoru. Haruka started his fierce attacks, and also declared "You will like me for sure!" How will the cool and quiet Kaoru react after knowing about Haruka's feelings?

Series version of the oneshot/tank under the same name done by the same artist.

Volume 1 of the series is the oneshot/tank containing four oneshots. The oneshot Sukitte Iwaseru Houhou is basically a Chapter 0 (Prologue) to the story.
The story continues in Volume 2 - from Chapter 1 of Sukitte Iwaseru Houhou.

Cute and popular, Nanoka seems to be the type of girl who could get any boy using her so called “tactics”. Accepting confessions and dumping boys at the snap of a finger, she’s never truly been in love… until she met the Cooking Club President, Haru. How can she catch this upperclassman’s attention when she can’t keep herself composed enough to use her so called tactics?

For a little while, Kiyomizu Iroha and her best friend were met with joy as they ended up in the same class. But then, every day she starts feeling left out after her best friend got a boyfriend. Would Iroha do the same...!?

Hajime is a guy who can't talk to girls properly, even to a game character. But then a girl who calls Hajime her father, barges in on him while he is working. It seems that she has come from the future and she was Hajime's daughter. She has come back to the past to cause a breakup between Hajime and a lady who he is supposed to marry in the future, and make sure they won't get married. The bad part is that she still does not know who the lady is.

This series is a prelude to the relationship between Sakisasa and Hatori, their ups and downs. What sets this series apart is the fact that each scene is shown twice--once from the girl's point of view and then the guy's.