Manga by author Yamaguchi Mikoto

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Mikado High School trains the best students to be the best mercenary bodyguards. But Morito Hayama, a merc escort student with no rank whatsoever, is suddenly assigned to guard a person so highly valued that no escort has ever survived before. Will his subject survive the experience? Will HE survive?!

Distributing thrilling videos in secret!! A school game that puts life and death on the line!!

From MangaHelpers: Katagiri Yuichi believes that friends are more important than money, but he also knows the hardships of not having enough funds. He works hard to save up in order to go on the high school trip, because he has promised his four best friends that they will all go together. However, after the class's money is all collected, it is stolen! Suspicion falls on two of Yuichi's friends, Sawaragi Shiho and Shibe Makoto. Soon afterward, the five of them are kidnapped, and wake up in a strange room with a character from a short-lived anime. Apparently, one of them has entered them into a "friendship game" in order to take care of their massive debt. But who was it, and why did they have such a debt? Could they have stolen the money from class to pay for entry into the game? Katagiri and his best friends will have to succeed in psychological games that will test or destroy their faith in one another. [tethysdust]

The protagonist along with his step-mother, and 2 step-sisters(step-aunts) are summoned into another world where demi-humans are the rulers as saviors, but its not to fight against a demon lord, its to fight an Undead Apocalypse monsters called "Dead Mell" that have overrun the world and that can only be killed by using weapons made with holy silver.For that, a familia is made (group of 4 people) with them being the swordmaster that uses the holy sword, the guardian that uses the power of earth to protect, the healer that use the power of water to heal and the black mage that uses the power of fire to destroy.The role of the guardian, the mage and the healer is to support the swordmaster that can only kill the monsters.But to use magic powers one must offer part of your being as a sacrifice to form a contract with spirits, and the higher the sacrifice, the higher the power. Now they must choose who are the 3 that need to sacrifice part of their bodies to gain power and who will wield the holy sword.

From MangaHelpers:Kamiya Hiroki always thought women had it easy. This thought was throttled by the fact that his 24-year-old sister does not work and plays games all day. Why couldn't he have it this easy? He wanted to become a woman and be lazy like his sister. After blogging about his rants about his sister online, a mysterious reader comments on his blog, stating that there are ways to swap bodies with others. This would bring Hiroki's dream of becoming a woman to reality . Unfortunately for Hiroki, swapping bodies had unintended consequences when he returned to his own body. [DrCoke]

Murai Masahiko (16) has a fetish for the smell lingering around a scumbag in his class. One day, a beautiful girl named Mizusawa Haruka transfers into his class, but when they start dating he spills the truth: "Mizusawa Haruka died 5 years ago...." Who the hell is she!? What are her intentions!? The heart pounding suspense horror Scumbag Loser begins!