BaBuKa (2011)

When Mafuyu Oribe and her adopted sister Tomo rescue a strange wounded man, they have no idea what they’re getting involved with or what the consequences will be. Alexander Nikolaevith Hell is an Iron Qwaser, one of many opposing factions of super-warriors.

Hida Kizuna possesses the HHG (Heart Hybrid Gear) ability, but it is not strong enough to make him particularly important. His older sister calls him to transfer to a strategic defense school, where many of the students (many of which are large-breasted girls) use their HHG abilities to fight invaders from another world while wearing extremely skimpy pilot outfits. Kizuna's fighting ability doesn't measure up, but his sister has another plan—apparently having erotic experiences with Kizuna will allow the girls to replenish their energy or power-up. It looks like his new school life is going to be full of embarrassment.

In a world bursting at the seams with moe monsters and humanoids of the horned sort, which brave heroes will take it upon themselves to review the beastly babes of the red-light district? Can only one be crowned the ultimate title of best girl? Behold the most tantalizing of trials.

In the new Tokyo, where every fetish has a face, burned-out war photographer Tatsumi Saiga is slumming in the tabloid wasteland. Sent to dig up dirt on the underground elite, he stumbles upon a depraved ritual below the city—and before the night ends, a single kiss from a young beauty named Kagura Tennouzu ignites a chain of events that could force the entire ruling class to their knees.

The story takes place in Japan in the early 21st century, in an alternate reality where the Tokugawa Shogunate has remained in power. In this reality, student councils are tasked with oppressing schools. Yagyuu Muneakira is a high school student who rebels against his student council with the help of girls who've had the names of famous samurai heroes passed on to them.

Student council president Takane Takamine is a popular star student. On the other hand, Koushi Shirota doesn't have many friends. That all changes when Koushi accidentally discovers Takane's ability to go back in time and alter past actions just by changing her lingerie. After some pestering, Koushi agrees to help Takane and be her closet, by having spare lingerie on hand.

Kazushi Sudou is a university student who is visited by his two childhood friends, the sisters Ayane and Kotone Shirakawa. When Ayane discovers that Kazushi not only forgot to buy her pudding but is also using her special lotion in the bath, she decides to take revenge and join Kazushi in his bath along with Kotone. Will the perverted Kazushi be able to remain indifferent to them both?

The story follows teacher and veteran solo camper Kensuke, who forms a camping group with four girls.

It is currently the Taiheimeji era, during the rule of the Tokugawa shogunate. In this era, breasts mean everything. If you have breasts, you are guaranteed wealth and popularity, but if you lack them, you are rarely considered human. Inside the shogunate, there is a group of warriors that support the government—the Manyuu Clan, which helps raise the future big breasts. Written on a secret scroll possessed by the clan, there are said to be various techniques on how to grow big and beautiful breasts. Chifusa is the heir of the clan. However, she takes the secret scroll and runs away with it, hoping to fight against the cruel world that the Manyuu Clan has created…

High school student Michio Kaga was wandering aimlessly through life and the Internet, when he finds himself transported from a shady website to a fantasy world — reborn as a strong man who can use "cheat" powers. He uses his powers to become an adventurer, earn money, and get the right to claim girls that have idol-level beauty to form his very own harem.