I'm taking this vacation so I can do things like this with you, so get ready." Mei hides his love for his childhood friend, the actor Fuji, and supports him as his manager. Fuji has been working as an actor based overseas, but now that he is 30 years old, he decides to go back to Japan and live with Mei on a vacation. When Fuji arrives in Japan, the first thing he wants is to stay at a love hotel...!? "Mei, come here. Leave your body to me." With his sweet voice, Fuji pushes Mei down and kisses him. Mei, who is aching with his hidden feelings, wants to push Fuji away, but he can't resist him. He's forced to cum by the passionate Fuji himself.
Each book is a debt of love. Each step forward is a mortal challenge.
From MangaHelpers: 28 July 2061 was an unlucky day for Raiji, in which he was falsely accused of being a groper on public transport. That evening, he joined his friends, Yuma and Osamu, to watch Halley's Comet. The comet appeared to arrive a few hours ahead of schedule, but it didn't just pass by in the night sky. Instead, there was a blinding flash, and all the people Raiji and his friends had been watching with vanished. Not only that, but the area around them was suddenly filled with nightmarish giant mushrooms and twisted human faces. In this new, violent world, the three of them will encounter dangers human and inhuman! [tethysdust]
Taken from Cheap Manga: This series is self-titled
Two young doctors, the passionate and well-liked Osanai and the ambitious Tatsugaura, are both investigating the mysterious 'Monmo' disease, found only in one remote village, which causes bizarre bone deformation, making its victims take on a beastlike appearance before their deaths. Osanai, caught between the allure of his urban medical world and the rural peace offered by the remote village, does his best to help the victims retain their humanity in the face of a medical establishment which views them only as guinea pigs and oddities. Meanwhile, Tatsugaura schemes against Osanai and tries to infect his rival with the disease in order to gain fame from researching the results.
Summary from ANN: It is panic at the Kuron institute : a guinea-pig escaped. And not any guinea-pig : it is Elaine, a fourteen year old girl, endowed with immense powers. Her father, the professor Reed, tried on her an operation aiming at giving her a psychic force equivalent with that of a nuclear fission. Elaine has a twin sister, Diana, resulting from the same experimentation. Both developed an incredible mental force but Diana is a handicapped person, with a body entirely robotised whereas Elaine is a wild child, with an animal's nervous system. Together, they are the key of a discovery which would disrupt the world.
A serial-murderer is on the loose who just so happens to also be removing the hearts of his victims and taking them with him. His victims however, are not merely random humans as thought by the police. They are in fact, the past and present guardians of the gateway of the afterlife. On the day he is to be married, Detective Kanzaki, who happens to be on the case, discovers that his fiancé Mina has been murdered with her heart also missing. He also learns that the killers are Kudo, a geneticist, and his evil secretary Rei. The two are trying to obtain six hearts from the guardians so that they may call forth a horde of demons from the Gate of Rage and have their every desire granted. Only problem is, once they open the gate the entire world will be covered in darkness. Meanwhile, in the afterlife, Mina encounters Izuko, the Guardian of the Gate. Izuko gives her three options: Mina can choose to ascend to heaven and be reborn, she can choose to forever walk the earth as a ghost or she can choose to curse one of the living to death and as a result be cursed to descend to hell. Mina has 12 days to make her choice. - Wikipedia.
Students are at a hot spring for a school field trip and two friends, one who happens to be a trap happens to end up alone with his friend, all said and done, some ecchi things occur leading to a love comedy of sorts.
Aboard the Advenna Avis in 1711, a group of alchemists summon a demon in the hopes of gaining eternal life. The demon gives them an elixir of immortality and the method of ending their existence by "devouring" one another. Soon after, one among them begins to devour his companions. Realizing the danger posed by staying together, they scatter across the globe. Centuries later in 1930's America, a certain federal investigator tries his best to combat the rise of organized crime during Prohibition, send a particularly infuriating terrorist to Alcatraz, and catch an outrageous thief duo. Meanwhile, the transcontinental train, the Flying Pussyfoot, begins its trail of blood across the country. In 2002, a small group of the original Advenna Avis alchemists are on a journey to find the rest of their fellow immortals. However, there is one companion they did not expect to meet again. Seemingly unrelated events, from a sleepy Italian city in the early 1700's to a modern luxury cruise ship traveling across the Pacific, reveal themselves to be far more connected than anyone could imagine.