An alternative take on Mazinger Z, in the future, the world was destroyed by the demon know as Mazinger Z and the only human that is left on earth is Kouji Kabuto, he is given the chances to save humanity, by sending him back in time by a mysterious Minerva X, in this take the history is for adults, with nudity and blood that may be too much for some fans of the original version

After 7 years, Miyane Kokoro returned to his previous city because of his parents' transfer. Back to the same school too, he can't wait to see Chanko (the stray cat that lives there) again, even if it's past curfew, but his attempt to find Chanko fails when he ends up getting caught by the school nurse, Hiragi.

A story about a female knight captured by barbarians.

The two of them know each other’s fap material, and they even rub each other out. Such childhood friends are Junto and Sato. One day, the AV that a classmate lent showed A**l sex!! Sato, gushing with curiosity, says that he wants to try it, and begs Junto to put it in. Junto gives in to the seduction, and...!

Aside from the title story, the stories of 3 other couples have been included. Each story has an additional extra! Packed with cuteness and lewdness, this is Kotsume Rokku's debut manga!

Rintarou and Kiyo are childhood friends from kindergarten. Rintarou was initially troubled by Kiyo's sudden confession, but after Kiyo left to study abroad in England, Rintarou started to see him as a possible romantic partner. Now, four years have passed and Rintarou is a child-caretaker, while Kiyo has just returned as a new professional soccer player. Rintarou is uneasy about all the changes that have occurred to them both while separated, but Kiyo tells him that "for this whole time, the only one I've liked is you"...

Kyoubei Kurokawa, a university student, is aimless in life and has run away from his home to live alone but has nowhere to sleep. One day, his life is saved by Asumi Nanjou, a mysterious girl from the same university who takes him to her apartment to treat his injuries. After hearing of his situation, Nanjou decides to let him live in her home but under one condition: he will be an invisible man. He later discovers why: she will completely ignore his existence. Meet Kurokawa and discover the advantages (and disadvantages) of being an invisible man and unraveling the mysteries behind Asumi Nanjou.

Chichi no Jikan follows Shinogi Kyuuichi, a male biology student who lives in an apartment near a helpful female neighbor/friend, Takarai Ayaka. One day, he is visited by aliens, who demand that he raise their baby for a year... or else the world is history. The baby is apparently human, and is raised the way humans are: through breast-feeding. Kyuuichi's sex is not a problem for the aliens: they give him a simple device that switches his body to a woman's with the mere touch of a button. Conveniently, Kyuuichi's female form is very well-endowed.
Although she's understandably confused and uncomfortable by the whole situation, Ayaka helps Kyuuichi out as he navigates the unfamiliar experience of raising a child, and breast-feeding it in particular. That means going to a store to buy a breast pump, visiting a maternity hospital to get a massage to release Kyuuichi's stored-up milk, and giving the baby a bath together. Kyuuichi, as a biology student, is fascinated by the whole thing from an academic perspective.

Her unrequited love, the man she’s always longed for, has offered to buy her for a night! Emilio Rios is a Spanish businessman known for his ruthless business practices and splashy affairs with women. He’s her brother’s good friend, and Megan had been secretly in love with him since she was young. Right up until two years ago when he accused her of being a loose woman who preys on men’s baser instincts! After that she hadn’t want to ever see him again, but cruel fate brought her and Emilio together again at the airport in Madrid. And now he’s bound her to him with an unfair contract!

Cam, a reporter who leaps into danger and has a reputation as a playboy, returns to Spain for the first time in six months. When he arrives at his villa with a beautiful woman in tow, a quiet widow appears in front of him. Widowed Liz, who’s in charge of managing the villa’s garden, isn’t Cam’s type, but he can’t get her out of his mind. When she cries at the memory of her late husband, it shocks him. Is there even one woman who would cry for Cam? He realizes he wants a loyal partner. He’ll even give up his playboy ways to win one!

Lucy never thought that covering for a coworker would change her life, but that night she would meet Rafi, a wealthy prince from a small country near the Ural Mountains. From the moment they met, Lucy knew Rafi was the man for her. Before long Lucy was pregnant, and Rafi, intending to do the right thing, took her to his home country to marry her. But soon after their marriage, everything changed—Rafi became as cold as ice. Trapped in a loveless marriage in a country where she doesn’t know the language or the customs, Lucy is unsure what to do. Will things get better for her, or will she be forever stuck in a cold, loveless marriage?

It's been 100 years since the extinction of alphas and omegas. These genders now only exist in textbooks. Ayase, who was born with an "Omega mutation" in this world where only betas exist, has to labor as an AV male actor in order to secretly obtain expensive suppressants. "I would never be able to have a normal love life" is what Ayase thought, but one day, a fateful encounter with a man named Inukai left him with an uncontrollable desire. However, when they tried connecting their bodies for the first time that night, 'that' happened?!

From MangaHelpers:
Mu-kun has moved in with his new wife, Hinata. Instead of moving into their own house, though, he's moving into the house that is also shared by Hinata's mother, her aunt, and her two little sisters. Most of these women are quite well-endowed, and have very loud personalities. He and Hinata are eager to have sex, but it's so hard in such a crowded house! Will they be able to find time to be alone together?

A semi fictitious one shot by author Maruo Suehiro, intersecting the life of Polish Franciscan Friar missionary, Maximilian Kolbe (a real life historical person) and a young Japanese prior to the Nagasaki Bombing.

When your mundane routine of taking the train to work suddenly turns both interesting and troubling (?!) after meeting a certain someone.

Kei and Yuri, known as the Lovely Angels–or the notorious Dirty Pair, depending on who you ask–work as “trouble consultants” for the galactic Worlds Welfare and Works Association (WWWA). But in their pursuit of space-wide justice, they cause space-wide disaster! The chaotic (and strangely successful) exploits of these interstellar agents have charmed audiences since their debut in 1980. For the first time ever, this manga adventure for the iconic pair–created in Japan as a retelling of the first light novel–will be available in English, contained entirely in one omnibus!

Eight years prior to the story, explosions caused by scientists at the foot of Mt. Asama which caused a meltdown of Getter Ray energy that spread throughout all of Japan. People throughout the world began to experience some extreme mutations from the irradiation of Getter Energy that caused them to fuse with machinery and organic material and were dubbed the Idea. To combat them the Getter Robo is created by the organization GETTER and three pilots: Ryo, Hayato, and Musashi are recruited to pilot it and battle the Idea.

Have you ever seen a female character with a style and personality like a man? Or a male character who likes pink and loves beauty. And they come together in a very strange situation. Follow the story "Getting married is not easy" you will laugh from the first chapter

A dark chronicle of intrigue and betrayal set in the royal palace of a crumbling kingdom. A chronicle that will make you laugh the second before dropping you into a pit of despair. A chronicle without pretense, a strike straight to the heart.

She was calculated by her family to be with a stranger. The next day, a group of black people "shelved" her to the Civil Affairs Bureau and she was forced to marry her "one-night stand" object. Her husband was tender and considerate but she had never been able to meet him. At the same time, the overbearing president suddenly broke into her life...

Out of the blue, the new president, Taiga, suddenly ordered Amami Kei to become his secretary. Though confused, Kei reluctantly agree but upon meeting Taiga, Kei was shocked to see the person who was responsible for his trauma way back from high school! Kei immediately rejected Taiga’s proposal but Taiga couldn’t take the rejection well. And so starts the love pursuit relentlessly!