In a world where the number of women being born is decreasing and it's now mainly a male society. The scientists are trying to figure out a way to bring back humanity and fix this virus. One of the famous, upper class, bright, young and handsome scientist named Mikoshiba has come to the lower class area in order to help their research due to his interest in a cute, naive but average scientist named Niino who dreams of saving the world. Mikoshiba now moved in with Niino, has a theory in which he wishes to try out. His theory is that by them having sex and sexual relations that they might able to solve the world's problem!

Description by LuffyNoTomo

From Nakama: Without worries about girls or money, halfheartedly living Nishizaki meets the love of his life on campus. A lover who bites his lips when happy... Araya is always troublesome, gloomy, and without desire. Thinking of him, Nishizaki’s teeth always hurt...

This story is about a man who steals others' luck by touching them with his bare hands. He takes luck away from those "bad" men who have been doing horrible things and makes their death look like a coincidence. With all this luck, what does he do with it, how does he use it?

Devastated after the death of her only daughter, Eunjo joins a group suicide. Instead of death, she opens her eyes to the days before. Fate is cruel as she must now relive each joyful moment with the pain of knowing what's to come. As she flashes back into the past, Eunjo realizes her future is set in stone... or is it? Can she change this twist of time for the better somehow and save her loved ones?

Kagami Yuujin is in intimate relationship with his servant Takamizawa Ei. Will this bring them love and happiness or will the pressures of Kagami's responsibilities as Leopard Clan Leader get in the way of this pair?
Following the storyline from Kuroneko Kareshi No Itoshikata from Kagami's brother's point of view.

-----------------------------------------------------------
Series Chronological Order [Pairing # : Volume #]
Nekoka Danshi no Shitsukekata [1:1-5]
Nekoka Kareshi no Ayashikata [2:1]
Ikezu Kareshi no Otoshikata [3:1]
Kuroneko Kareshi no Asobikata [4:1]
Kuroneko Kareshi no Amaekata [4:2]
Kuroneko Kareshi no Aishikata [4:3-4]
Fukigen Kareshi no Nadamekata [5:1]
Kuroneko Kareshi no Afurekata [4:5-6]
Fukigen Kareshi no Saraikata [5:2]

From Tokyopop:
Sato Tatsuhiro is a drug-addled "hikikomori" (a Japanese shut-in) who thinks a sinister organization, NHK (Nihon Hikikomori Kyoukai), is the cause of all his problems! He falls in love with a girl, Misaki, who he thinks is trying to assassinate him, but doesn't know how to talk to her or if he can trust her. The more he stays in his house watching anime porn, reading manga, and doing drugs, the harder it is for him to leave. Only Misaki can keep him from rotting away in his own apartment!

Michio Yuki has it all: looks, intelligence, a pedigree as the scion of a famous Kabuki family, a promising career at a major bank, legions of female admirers. But underneath the sheen of perfection lurks a secret with the power to shake the world to its foundations.

During a boyhood excursion to one of the southern archipelagos near Okinawa, Yuki barely survived exposure to a poison gas stored at a foreign military facility. The leakage annihilated all of the island’s inhabitants but was promptly covered up by the authorities, leaving Yuki as an unacknowledged witness—one whose sense of right and wrong, however, the potent nerve agent managed to obliterate.

Now, fifteen years later, Yuki is a social climber of Balzacian proportions, infiltrating the worlds of finance and politics by day while brutally murdering children and women by night—perversely using his Kabuki-honed skills as a female impersonator to pass himself off as the women he’s killed. His drive, however, will not be satiated with a promotion here and a rape there. Michio Yuki has a far more ominous objective: obtaining MW, the ultimate weapon that spared his life but robbed him of all conscience.

There are only two men with any hope of stopping him: one, a brilliant public prosecutor who struggles to build a case against the psychopath; the other, a tormented Catholic priest, Iwao Garai, who shares Yuki’ls past—and frequently his bed.

From Girls' Generation Scanlations:

Tannai who works in the PR Department at a soft drink company met Okano, a co-worker, at a product promotion event and they quickly grew close. While his heart is fluttered by Okano’s scent and body, he spend his days avoid thinking deeply about it as if he’s running away from something. Until one day, led by alcohol, he finally laid a hand on Okano…?!

A good man will never neglect his job and love <3
It’s the time for salary men and work gloves!
Extras are included

From the manga habit:

A dream filled with red camellia and the passing of a strange mask... The owner of this mask is a boy named Yue who lives in a temple populated with unusual - and not altogether human - residents.

It's winter, and the nearby town, Utsuwa, is holding a seasonal festival. Kurogitsune, Yue's fox spirit friend, decides it's the perfect opportunity for the sheltered young man to experience the sights, sounds, and (most of all!) the food in the outside world. Even though Yue is forbidden from ever leaving the temple, they sneak into town, not realising what they've set into motion.

Note: #10 is an extra volume. The main story ends in the 9th volume.

Being a virgin employee, Yamashita had dreamed to sleep at least once with his most favorite gay porn star, Hikaru. From there, he has an unbelieveable encounter when he left from work! During the middle of the intercourse, however, it turns out that the man isn't Hikaru, but someone called Asazaki Ryuuichi...! "...Who on earth are you?!"

From XscansX:
What is the purpose of your life? To live is just to die?
Is life a slow death? Do you even have your own purpose? Nao is a sensitive yet self absorbed college student, believing that reality is cruel to him. Ever since he was a child, he was categorized as a "ghost boy" whose existence was so faint that no one cared about him. One day Nao snapped and assaulted a young boy playing in a family restaurant with Tabasco sauce.
While being interrogated by the police, a mysterious beauty appeared and rescued him. Her reason was simple: "Do you want to dominate the world with me?"

From Bliss:

Isshin, the son of a prestigious samurai clan, travels to Edo with his most trusted servant, Seiichirou. Believing it to be the best for his master, Seiichirou leaves Isshin in the care of the Edo Fire Brigade's 48th team; or "Ku Squad". Without any knowledge of firefighting, can Isshin blossom with courage and show his true samurai strength?

Having a body that sends out pheromones, that makes people abnormally fascinated with him, one day he accidentally summoned a man who calls himself 'Jin' and is supposedly a devil. "I will help you make your every dream come true." Listening to to Jin's seductive whispers he can't help but ask him to cure his problematic body. But unexpectedly, this is the start of an obscene contract...? The price to pay for this contract is to have 24 french kisses or have sex with the devil everyday?! This is the love story of a seductive devil and a pretty uke!

Fuuko is a happy and cheerful girl. One day, two boys, Daiya and Ichi, move into the apartment upstairs. Cold Ichi and mischievous Daiya gave a very bad first impression! All three are going to the same school as well! How will Fuuko's high school life turn out?

From Cosmique Scans & Yaoi Is Life:

When his love stricken brother commits suicide in his youth, the footsteps left behind lead him to a detective. Because of the unusual scent of the cigarette the neighbor smokes, a maze of suspicion and doubt are created that reach the courts. A story of a painter living in isolation on the outskirts a town, and a young man who becomes entranced with a secret painting by his grandfather. Know at the end you cannot turn back when the enigma that is love calls. Three thrilling love stories.

Hiroki's older sister got caught up on a bus accident. By the time she wakes up, he found out she has lost her memories. But this didn't actually seem to be the case, there's someone else is inside her!

From Girls' Generation Scanlations:

Nonokawa was reunited with his former best friend, Kouya, when he returned to his hometown after it sunk under the dam 12 years ago. It was also 12 years ago when he suddenly started lusting after his best friend... Will the feelings buried deep in his heart be exposed once again?

It centers around the travels and battles of one Aotsuki Ushio, who is constantly being stalked and aided by a gigantic, supernatural and sometimes invisible tiger (Some people describe it as akin to Calvin and Hobbes on acid).

Ushio's family maintains a Shinto temple in Japan, where 500 years ago, his samurai ancestor battled that same tiger to a standstill, and eventually trapped him against a rock using, a blessed spear called the "Beast Spear", which in addition to its intrinsic formidability as a weapon, can also boost the physical powers of the user. While cleaning out the temple storage, Ushio accidentally unseals the chamber which Tora was trapped in. Initially, Ushio wisely refused to remove the spear pinning Tora (とら, Japanese for tiger) down, as Tora unwisely makes the strategic blunder of mentioning that the first thing he would do upon being freed would be to devour Ushio; but Tora's unsealed presence attracts various demons to the premises, and Ushio is forced to free Tora in exchange for his help. The series focuses on their relationship, interspersed with battles against mythological foes, and with Tora's attempts to grapple with modern life and gobble up Ushio.

Won the Seiun Award for Best Comic of the Year in 1997. It also received the Shogakukan Manga Award for shounen in 1992.

From Doko Demo Doa Manga Scanlations:

Yamato is the son of a human and the most powerful snow woman. One day a young snow woman named Hiori came to take him back to the village of the snow women. It is said that the kiss of a snow woman could freeze a man's heart. That's what Hiori intends to do to take Yamato back to the village. But how will Hiori accomplish her mission when Yamato, who isn't mesmerized by the usual enchantment of a snow woman, doesn't let Hiori come near him?

Note: Original language image is unavailable without a watermark.