1-4. Koi Mane
Chikanari's kouhai, Kamo, is head over heels in love with him, to the point where Kamo does everything in his power to be "together" with Chikanari - including changing his hair to have the same style and color, and even getting hurt in the same places. Chikanari's view of love is completely different, so how will these two continue their relationship despite all the odds?

5. Amai Koi ni wa Kimi no Uso (Your Love Is Your Sweet Lies)
How far would you lie to get the person you love? How far would you try to get a chance at love? Ibuki and Keisuke have to find a way for their love to get through a jumble of lies!

6. Koi Mane Extra

After the disappearance of his parents, Suzuki Tooru was all over the place and somehow ended up as a caretaker of a school dormitory in Tachikawa. The dorm building is all tattered. Its student boarders are all weirdos. And of course, there are rumors about ghosts haunting it too. Turns out, that dorm is connected to another world! Although Tooru doesn’t have a single friend in class, he can always just go to the dungeon to slay monsters and level-up. There, he befriended a slime, a female knight, and even a female sorcerer ♪ Thus, he begins another day of after-school club activities in another world!

Kodai Okuhira, is the director of a large corporation. Yukino Miyachi, his excellent and beautiful new secretary, is an assassin who had a mission to kill Kodai. The night that she was going to carry out her mission, she makes the mistake that changes her destiny significantly. It is very difficult to fulfill her job as an assassin, a newly married life and a husband with a great sexual appetite!

From Nagareboshi Manga & Manga Abyss:

Ogasawara Aki is the reclusive, idealistic composer of the popular band Crude Play. Discontented with his life and with no drive to succeed, he meets Riko, the 16-year-old grocer's daughter in a band consisting of her childhood friends, and asks her to be his girlfriend on a whim. Riko, young and innocent, agrees immediately, but worries about her new boyfriend, whom she suspects has just broken up with a woman he cared very much for.

In order to destroy the world, Alex the elf resurrects the ancient demon king but he ends up being a goblin! With a demon king goblin, an elf and a pacifist orc can they really destroy the world and defeat the powerful warriors?

Ishikawa-san, the girl in the neighboring seat, wears a mask no matter what she's doing. One day, Izawa catches sight of her face without a mask and wants to see it more and more... Masked or unmasked, it's a cute romantic mask comedy!

(Synopsis translation by Shurim)

Links:
Author's Twitter: https://twitter.com/rakugaki_tabo
Author's Pixiv: https://www.pixiv.net/en/users/44311955

My classmate Kashiwagi Otome, is a cute girl, but she dresses as a guy. And so, but why...I hide as a girl. Full of Tsukkomi (straight man character in jokes) everywhere!? An obvious tomboy, with a bit of ecchi school life comedy!

High school student Amatsuga Totono has a secret which no one must ever know about. His school's new counselor, Agou Nika, has a secret hope held in her heart. When the two of them cross paths during the springtime, their everyday lives of loneliness come to an end. Their battle to accomplish their aims, and to become the person they each want to be, starts now!!

A manga adaptation of the novel series of the same name. A collection of stories from the Love Live!'s cast, each one centering on a different girl.

A beautiful fantasy love story between an undead hero and a great saint... which starts with a death flag on the first page.

While out on assignment trying to document the illegal activities of the Japanese underworld, photographer Takaba crosses paths with the dark and mysterious leader Asami. Asami takes Takaba captive in an attempt to subjugate and possess him. But when the son of the Chinese mafia enters demanding evidence that Takaba may have, will Takaba be able to survive being caught in the crosshairs of a deadly underworld feud?

And here, Takaba's adventure, begins!
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Volume overview:

Vol. 1: Target in the Finder (Finder no Hyouteki)
1. You're my Loveprize in Viewfinder: Freelance photographer Takaba Akihito is abducted by the powerhouse of the criminal underworld, Asami Ryuichi, who claims both Akihito’s body and soul. Not just for tonight, but forever... 
2. Fixer: Again delving into the dark underworld, Akihito meets icy beauty, Fei Long- leader of Hong Kong’s mafia. 
3. Embrace the Heat of the Night: Akihito is shocked when Asami show up on his doorstep, one stormy night. 
Extra: Love Lesson (Love Lesson part 1)
Yuusuke's senior, Ichijou, tells him an old horror story of an ill-fated lover who, rumor has it, was left to die in what is now the present-day basement of one of the school's buildings. Sent on an errand between classes, Yusuke can't help but recall the story as he makes his way through the eerie surroundings, when suddenly... he blacks out...
Extra: Risky Society - God Bless My Justice
A rookie to a society of people with supernatural abilities must prove himself (and his love) to his superior.

Vol. 2: Cage in the Finder (Finder no Ori) 
1. Splendor of High Rises 1-4 (Kourou no Hana ~Unobtainable~): The fateful tale of how Asami and Fei Long first met 7 years ago. 
2. Body Chase: Working with a police detective, Akihito infiltrates Asami’s flagship club, Sion. 

Vol. 3: One Wing in the Finder (Finder no Sekiyoku) 
1. Naked Truth 1-5: Tokyo arc. Just as Asami and Akihito are beginning to be drawn closer to each other, Akihito falls for a trap set by a vengeful Fei Long. 
2. Love Surprise: On New Year’s Day, a very drunk Akihito repeatedly calls up Asami and harasses him over the phone.
Extra: Baked Sweet Glasses
Overenthusiastic salesman Fujiya is determined to win over businessman Mikami. But what exactly is Fujiya aiming for? And how does he know about Mikami's secret love of sweets?

Vol. 4: Prisoner in the Finder (Finder no Ryoshuu) 
1. Naked Truth 6-12: Hong Kong arc, Part 1 
2. Takaba's Wonderful Day: After witnessing Akihito being humiliated on the job, Asami offers to take Akihito out for the evening. 
Extra: Gakko no Kaidan (School Ghost Story) (Love Lesson part 2)

Vol. 5: Truth in the Finder (You're my Naked Truth in the Viewfinder) (Finder no Shinjitsu) 
1. Naked Truth Zero: The story of how Fei Long and Yoh first met.
2. Naked Truth 13-18: The conclusion of Naked Truth, Hong Kong arc, Part 2 
3. Naked Truth Extra 1 - Temporary Paradise (Naked Truth epilogue): Asami and Akihito spend time in the South Pacific while they both heal. 

Vol. 6: Passion in the Finder (Finder no Netsujou) 
1. Naked Truth Extra 2 - Drowning in a Sea of Bloody Marys (continuation of Temporary Paradise): Akihito gives Asami a massage. 
2. Escape & Love 1-5: Asami and Akihito return to Tokyo. Despite their clashing worlds, Akihito and Asami continue to be drawn to each other. 
Extra: Koisuru Finder no Hyouteki a.k.a. Koisuru x VF Crossover
Takaba Akihito (Finder) has his hands full with Mizuno and Hiyama from Koi o Suru DNA + when they go to Kyoto for their graduation trip.

Vol. 7: Desire in the Finder (Finder no Katsubou) 
1. Pray in the Abyss 1-9: Akihito splits his time between being Asami's cook (and housemate) and working as a daredevil photographer. But what happens when he catches another man weeping on Asami's perfectly tailored sleeve? Are business and pleasure about to mix in the worst possible way? 
2. Takaba Akihito's Graceful Summer Holiday: Akihito and Asami both find ways to beat the heat. 
3. Head of Department Takaba Akihito's Rose Colored Accomplishments: Akihito dreams that he is the General Manger of Takaba, Co., and attempts to bend subordinate Asami Ryuchi to his will.

Vol. 8: Pray in the Abyss (14 - 18)

Vol. 9: Pray in the Abyss (19 - ongoing)

The manga is about an antisocial high-school student named Hachiman Hikigaya with a distorted view on life and no friends or girlfriend. When he see his classmates talking excitedly about living their adolescent lives, he mutters, "They're a bunch of liars." When he is asked about his future dreams, he responds, "Not working." A teacher gets Hachiman to join the volunteer "service club," which happens to have the school's prettiest girl, Yukino Yukinoshita.

Riko (whose real name is Ayako) was already in high school when she gained a new younger brother. Miguel is a nine-year-old peruvian boy rescued by her father in the midst of turmoil before he came home to his loving family in Japan. Miguel had a good grasp of Japanese but he didn't seem to be warming up at first. He was overly polite and he barely smiled. But Riko was determined to make sure that he felt that he was now a part of her family, introducing him to the world outside and to the game of basketball... now Miguel is in high school, fresh out of the international school.. and he has proven he can be good at many things: in academics, in sports... but even though he seems to be really good at basketball (showed the students their first live look at a dunk), and though he seems to really like it, he seems unwilling... what is he afraid of? what is he pushing away?

Rito is a high-school boy who just can't confess to the girl of his dreams, Haruna-chan. One day when coming home and sulking in the bath-tub, a mysterious and barely clothed girl appears out of nowhere. Her name is Lala and she comes from another planet...

I was reborn as a Viscount's daughter, Cecil, in a very unexpected otome game where all of the love interests are Yanderes. However, Cecil, being the rival character in the game, was killed in every route by the chosen love interest. Furthermore, wishing to have a long life, Cecil meets Ashley who will be her servant and.... he's one of the Yandere love interests...!?

The story takes place in an imaginary town Seize (the model cities are Cuenca and Alarcón Fortress in Spain). A long war brings a gradual decline to the world. People disappear from the town and fishes cease to exist in the sea. In this quiet world, five girls guard a fortress and play brass vividly.

This voice, this song, this echo.
Through this sound, this is the melody of two people coming together both heart and body.

Guitarist Kouhei is always fighting with his other band members due to wanting to go in a different direction. Then while he’s at a local music venue, he hears an incredible singing voice and falls in love at first “sound.” He doesn’t know who the voice belongs to or where it came from, but when X mysteriously appears, Kouhei unconsciously gets hard. He searches desperately to find him again, but his only clues were X’s voice and a tattoo on his left arm. After several months with no luck, he runs into X by chance at the convenience store! Kouhei starts hitting on the man who introduces himself as “Rei,” only to be completely rejected…

"Marriage"—when two who were once unrelated vow to love each other and wish for each other's happiness become "family." This marks the start of the married life of her dreams. Or so she thought. Before she knew it, she became a shut-in!? What will the newlywed wife do!?

This is the true story of a woman who became a shut-in as she was living the newlywed life!

Suddenly a high-school student Subaru Natsuki has been summoned to another world on the way back from the convenience store. With the biggest crisis of his life being summoned to another world and no sign of the one who summoned him things become worse when he is attacked. But when he is saved by a mysterious silver-haired girl with a fairy cat, Subaru co-operates with the girl to return the favor. When they finally manage to get a clue Subaru and the girl are attacked and killed by someone. Subaru then awakens in the place he was summoned and notices the ability he gained "Returns by Death" a helpless boy that only has the ability to rewind time by dying. And beyond the despair can he save the girl from the fate of death!

Raising the curtains of a fantasy parallel world are the strongest dragon clan and the weakest girl!
Working under a certain feudal Lord, Haru is very ordinary and lives a normal life.
However, the jewel in the ring her late mother had left her can only be found in the dragon country - it’s an extremely rare thing. After finding that out, her life completely changes.
She picked up a baby dragon, and a mysterious man wearing black clothes appeared after. What will happen to Haru’s ordinary life?!