Being a regular college student, Matsutaka Nanako found herself signed up for the Abnormal Physiology Seminar. While attempting to keep her mental stability in check, her peculiar classmates begin to cast a shadow on her demeanor.
Fourteen-year-old Iruma Suzuki has the worst luck possible! Incapable of saying no to anyone, he has always performed whatever life-threatening jobs his greedy and lazy parents requested. His life takes an unexpected turn when they form a contract with Sullivan, a high-ranking demon, at the cost of his soul. Afraid and confused, Iruma is surprised that all Sullivan wants is to act as his grandfather. Sullivan takes care of Iruma and decides to enroll him in the demon school Babyls. Iruma's greatest challenge is hiding his status as a human, so keeping a low profile among his peers is the only option. However, Iruma will soon discover that he is no ordinary human, and the demons might also be more than what meets the eye.
Yasutaka Iijima, a boy wearing glasses, sits in the corner of the classroom and wants nothing to do with Ema Kitaoka, a popular gal in the same class. However, after a chance meeting at the school camping trip, they started talking with each other, but only outside of school. They are both unsure of each other's "true feelings."
As a meek high school student, Heo Jeong-woo is used to incessant bullying. No different from his middle school, all sorts of violent people and dangerous cliques prey on the weak. However, a sudden shift in power comes with a new transfer student, Han Bora. Unbothered by the remarks about an unsightly birthmark on her leg, Bora assaults her would-be bullies with shocking force and cruelty, requesting one thing: the identities of those who know a girl named Han Sena. Jeong-woo attended the same middle school as Sena, so he remembers her story—she was nearly killed by bullies and has disappeared since. Desperate to escape his daily hell, Jeong-woo gives up the names of the four students who terrorized Sena. But he must be careful not to stand in Bora's way, as she is unpredictable and incredibly brutal, and all she wants is bloody revenge.
Hayase Nagatoro, a high school student, enjoys spending her free time bullying her Senpai. When Nagatoro and her friends stumble upon the Senpai's artwork, they find amusement in relentlessly bullying the shy Senpai. Nagatoro decides to continue her cruel game and visits him daily to force him into doing whatever pleases her, even if it makes him uncomfortable. Despite feeling somewhat aroused and fearful of Nagatoro, Senpai gets constantly involved in her games. Nagatoro uses his interests, hobbies, appearance, and personality against him to entertain herself. As time passes, however, Senpai realizes that he doesn't mind Nagatoro's presence, and an uneasy friendship forms between them as they put up with each other's antics.
When the alien Kiseichuu descend on Earth, they have one goal: eradicate the human race. They do so by feeding off the very passion that drives humans to reproduce, their H-Energy! Retto Enjou is recruited onto a team of elite, sexy superheroes assembled to save Earth. Living in a dorm with the four beautiful women of the HXEROS team, Retto finds himself caught up in a web of erotic intrigue where the whole world is at stake! Extraterrestrials and ecchi will collide in this ultimate battle for humanity's debauchery! Included one-shot: Volume 3: Haikei, Hannibal (Dear sir Hannibal)
The arc follows volume 19 of the light novel.
Kaya grows tired of holding her own feelings back, living life constantly accommodating others. One day, by chance, she becomes friends with her classmate, Ichikawa—a girl who is as straightforward with her feelings as it gets. Things get shaken up when she has Kaya tag along for a round of boxing...
Yamada, the most popular guy in school, has a secret he can't tell anyone: he used to be an overweight bullying victim. After lots of hard work, he managed to reach his current position in life, but what happens when the most popular girl in school, Manyo, learns the truth?
As creatures driven by our natural instincts, we embody our animalistic nature. Step into our world and witness the chaos of our high school lives as animals. Nestled amidst the woods lies an exclusively all-boys school where students not only learn but also strive to survive the challenges that come their way. This school is unlike any other mundane institution for humans. Instead, it's where beasts learn the subtleties of human behavior. Meet Oh Da-Ram, fondly known as "Squirrel," as he embarks on his first year in this school. As he adjusts to this new environment, his wolfish friend Kim Neuk-Dae lusts after Da-Ram's tail, a new duckling joins the fray and his classmates can't seem to act like anything but wild animals. Is anyone truly cut out to be human?