Prequel and side stories from the main story of Needless Manga. Volume 1 also contains prototype one-shot "NEEDLESS 1.5".

From Chibi Manga:

Yuri, who’s writing a novel on her beloved Mitsuki-kun. Became super popular, but she has to keep it a secret from Mitsuki-kun no matter what…

Karou, the male twin to the female super-model, Tsubaki, hates his face for its feminine beauty. Disgusted by the men drawn to him by his similarity to his sister, he has grown to hate any kind of contact with men. Then why is he conflicted by the attentions of Shino, the president company giving financial backing to Tsubaki's cosmetic firm? Isn't Shino just like all the other men seeking a substitute for Tsubaki?

A lighthearted slice-of-life story about a girl who finds a stray cat.

"A prince and such, how idiotic!!!"- That's what Ruri thought, but when she saw the school's most popular prince's unexpected side ...!?

1) In my arms
Ichimura, who looks like a young girl, is studying at an all-boys school. But actually he already hit 3,721 people for ridiculing him. Kousaka, who is weak in fighting, helps stop the fights. Between the weak and stubborn fellow and the violent beauty, a love will unfold.

2) My beloved's whispers of love
Starring characters from the first story; Kawai has had a crush on Ichimura, but now that he's started going out with Kousaka; Ichimura's friend, Isoya tries to cheer him up by saying "Hey! How'd you like going out with me instead?"

3) The name of that flower
Continuation of Ichimura and Kousaka's story.

4) Funny sweet
Kanade and Ritsu; friends in high school ; now lovers living together and their problems.

5) Under the blue sky
The story of Nimura san's construction site love.

A collection of short stories:

1) Vahlia no Hanamuko
Jiru and Vahlia were engaged. But Jiru suddenly went missing! Four years later, Vahlia was betrothed to his younger brother. During the night of the celebration of her second engagement, Vahlia decides to go on a journey… in search of Jiru!

2) Ryuu no Moriuta
The dragon child Kito and the priestess Shuen await the day Kito becomes the Heavenly Dragon.

3) Ginsekai no Shoumei
Alza lives alone on a desolate snowy plain. One day, Leah, a sorcerer from the magical city collapses near his house. Alza forbids Leah from using magic in his presence and shows her how beautiful life can be outside of the magical world. But, why does Alza hate magic, how did Leah get outside the magical city, and what will happen when Leah returns home?

4) Otogibanashi no Fude
At a far away village, there’s a sacred tree where the Water God dwells. It’s Sasara Yuukei’s task to trace the fading letters of the contract between the Water God and the people of the village. One day, while carrying out his task, he suddenly met the Water God herself! And gradually, he found out that what he’s been doing every day is actually...

[Taken from PRISMS]

Collection of Short Stories:
One story is about a pair of lovers who are always quarrelling and who won't admit that they're suited for each other. But their future daughter comes and helps them realize their love. There are also two early City Hunter stories in this book.
1. Tenshi no Okurimono (The Angel's Gift)
2. Ore wa Otoko da!
3. Neko-manma okawari
4. City Hunter - XYZ
5. City Hunter - Double Edge

From Sound of Jewels:

"This story is about my first but also my last love story".

Lilith can't remember clearly her past. But she can still
remember that one day her brother told her that he will
"definitely take her back" ...
Will he keep his promise?

1-3) The Captive Man
Since he was young, Sho has been in love with his older brother’s childhood friend, Kento. However, Kento rejects his feelings as nothing more but a whim. Will this rejection drive Sho over-the-edge of madness…!? No matter how much he embraces Kento, it’s never enough! Will this obsessive love ever find a happy ending!?

4) Contact
A morning train ride gets sexy for a salaryman and his molester.

5) Chivalry Lovers
Young Yakuza boss Taku has always had Ryuichiro by his side, from friends their relationship has gradually turned sexual, though they've never been "lovers". But now Ryuichiro is breaking things off for good, saying "We're not kids anymore". Will Taku be able to let him go?

The Math Senseis are back, and their passion has not wavered - in bed, in the bath, against the door - anywhere is good for them. Never look at a shower head the same. And learn a new and unique way to meet the neighbors. [Attractive Fascinante] Retsujou Kyoumushitsu (Prequel)

~A cursed forest and the castle inside it. Lynn is a young, pretty girl, who is an illegitimate daughter of a wealthy baron. One day, she is chosen to become the sacrificial bride for the Lord who lives in a cursed castle in the woods. This is Lynn's story. ~This is a Naver webtoon. http://comic.naver.com/bestChallenge/list.nhn?titleId=541226

At a festival, Natsuno Miyata saw his classmate Nase shed tears for a dead goldfish. Ever since then he longs for her tears. But how can he make the confident and composed girl cry for someone like him?

In the Ero Ki series:

V.1 - Junai Ero Ki
What do animals do in the spring of their lives? They mate! Wildly!

Four mischievous friends have met their match: their own hearts! Now that they're older, the only troubles these country boys find make them moan and pant. Kou-chan wants to confess to Kishi, but he’s full of heart-pounding doubt over Kishi s response. Mitsuru, the serious boy pining for a lost love, is ambushed by Tarou, an obtuse, air-headed sadist, full of devotion for his darling. And who is this tall boy, beating everyone up yet shooting flowers out of the panels? Somebody needs to figure out his body language.

Psyche Delico comes out to play... all over the pages of PURE LOVE’S SEXY TIME!

V.2 - Souai Ero Ki

They may be in relationships and having sex, but boys at puberty have a lot of problems to solve!

The long-awaited sequel to the fan favorite series Pure Love’s Sexy Time is here! Kou gets frustrated with Kishi for being too gentle with him, Satoshi and Eishou have trouble finding a way to walk the same path to their futures and there isn’t enough verbal communication between Tarou and Mitsuru while they become more and more physically compatible… Where will these boys’ paths lead them?! The final conclusion to a Pure Love’s Sexy Time. (DMG)

A collection of 4 short and cute stories

1. Junai Clover
Mai is in love with her classmate Ikeda. She doesn't have too much self-confidence, so she turns him down, not believing she's a good match for him. But she cannot forget him. A year later they incidentally meet on the bus and.....

2. Sora o Miagete
"I'll make sure he always gets to see the stars, even on a cloudy day."

3. Junjou Shuushinki
"An innocent young boy's feelings have touched my heart."

4. Shuushin Ice Cube
Juu Mangetsu, the high school erotic novelist, is being sought after by the playboy, Shiizaki.

From Jigoku:

Tomo's eyes chases after fellow teammate Tanji. He knows he has fallen for Tanji already but what comes with first love, makes him both expectant and scared of getting hurt.

Chap 4: Motto Furimuke yo Baby prequel
Seo falls for Kazuki within minutes but Kazuki hardly sees Seo as the love of his life. When Kazuki is kidnapped however, Seo shows Kazuki exactly how far he will go to save him, revealing how deep his love really is.

Misaki is a 30-year-old virgin who has a bit of a crush on one of his co-workers, a pretty girl named Amano, but he has no experience and no clue what to do. Fortunately for him, he has an ecchi guardian angel…

From CoyoMoose:

Amushasu, of the Alaturca Alagun performing troupe, believes in magic created by talent and hard work to reach the hearts of his audience. He does not have any respect for the magic of genies, though he does happen to own a very dissatisfied one named Mayu. His faith in his ability to sway a crowd is threatened, however, when he comes across a beautiful young lady whose heart appears to be untouchable.

From MangaHelpers:
A collection of five spooky stories:
1) Tenchi Shinmei by HINACHI Nao & AMENO Hirume
Asuna Shio is a teenage girl with a very strong perception of the spirit world and has a shrineless god as a companion. One day, Shio's classmate is seen vanishing into a mirror. She reappears afterward, but seems changed for the worse in terms of personality. What has happened to her?

2) Gekkouchou ~Hyaku-nen no Koi~ by MOKOYAMA Jin
A two-tailed tiger-striped cat is taken in by a girl called Mitsu and given the name Torakichi. Torakichi is no ordinary cat, and the love and tragedy between them may be strong enough to transcend a simple lifetime.

3) Friend Doll by TACHIBANA Azusa
Mizuno Sachi spends almost all of her time studying, thanks to her demanding parents, and she doesn't really have friends. There's a boy she likes at school, but it seems impossible to get close to him. Suddenly, her stuffed bunny, Mimi, starts showing up in her dreams to advise her through her teenage life. But what is Mimi's motivation for all this help?

4) Tonari no Yomi-san by UMENO Hana
There's an urban legend about a girl who killed herself as a teenager, "Yomi-san," due to her insecurity over her appearance. Supposedly, her father stuffed her body, and, in her quest to become beautiful, the body seeks to take parts from pretty girls. At one school, several pretty girls have been mysteriously injured. Could the culprit be the dead girl, Yomi-san?

5) Oni no Sumu Shima by NANAMI Sora
Saki moves out to a rural area, where she has no friends. In her loneliness, she goes out to an uninhabited island, where she meets a new possible friend. He's a demon, but as Saki gets to know him, she finds him less and less frightening.