When the "Samon Syndrome" was discovered 30 years ago, hundreds of young individuals have visited fantasy realms, with only a select few managing to retain the special talents they obtained there. The "Rogue Hero," Akatsuki Ousawa, abandons his tranquil existence in the fantastical realm of Alayzard in order to face fresh difficulties when he returns to Earth. He returns with Miu, the Demon King's daughter whom he vanquished; she must now pretend to be his younger sister in order to conceal her actual identity. The two quickly enroll in Babel, a specialized school created for people who have developed unique skills and magical abilities on their voyage to a fantasy world. The pseudo-siblings are unsure of Babel's exact mission, but it appears that it was established to educate and "guide them to the proper way for the sake of humanity and themselves" when they were young interdimensional travelers. Can Akatsuki and Miu be able to defeat the hostile, strong student council?

Kou Yamori finds his school life going well. A model student with grades to match yet in this cycle he finds no fulfillment. Culminating in him leaving school to break away. Restless, he one day goes a step further as to enter the city during its nightlife. The night is amazing but takes a turn as he runs into a strange woman, Nanakusa. One who espouses the virtues and allure of the night as a break from the monotony of the day. Spending some hours with her Kou finds himself invited to her residence to help with his restlessness. The sudden reality of sharing a futon with a stranger serves as disconcerting. He feigns sleep, hoping to sneak out, but instead finds himself bitten in the neck. Revealing Nanakusa as a vampire. Yet, he doesn't turn into one. Rather turning into one serves to be a more complicated affair as he must first love the vampire that bites them in order to turn. Seeking freedom Kou finds a purpose: To become a vampire and fall in love with Nanakusa.

Minoru Kagenou, obsessed with strength, has put himself through rigorous training. However, he makes every effort to blend in with the crowd. So, at night, armed with a crowbar, he brutally beats the local biker groups while feigning to be an average student during the day. However, his ambitions appear to abruptly come to an end when he is involved in a truck accident. He criticizes his weakness in his dying moments, saying that no matter how much he trained, there was nothing he could do to get past his human limitations. However, instead of dying, Minoru awakens in a different world where magic is prevalent as Cid, the second child of the noble Kagenou family. Soon he gains the power he had been seeking, he adopted the alias "Shadow" and founded Shadow Garden, a group whose primary goal is to battle the mysterious Cult of Diablos, a creation of Cid's. The Cult of Diablos is not as fictitious as Cid had planned, though Shadow Garden is expanding in terms of both membership and power.

When gamers from all over the world swarm the Underworld's servers and throw the Human Empire into complete disarray, the ultimate conflict with the Dark Region drags on. While Asuna Yuuki and her friends do everything in their power to defend their new allies, their numbers are dwindling. Alice Zuberg is being pursued by Gabriel "Vecta" Miller as she moves toward the World's End Altar. Rath members prepare a strategy in the meantime to fix Kirito's broken fluctlight. The invaders who are occupying the main control room, however, have different ideas. When all hope seems to have been lost and Kirito is surrounded by death and misery, a familiar voice says, "I will always be by your side."

Akira Natsume awakens from a 16-year coma after being struck by a truck and discovering himself inside a machine. He is welcomed by policewoman Minami Uezono and her android sidekick Alma as he gets used to the new interface. They demonstrate to Akira how his brain is housed inside an EX-ARM, a destructive weapon. The three must escape from a smuggler ship captained by an enemy using only cunning and battle prowess. Akira is first hesitant to engage in combat, but he soon remembers his brother's words from before the accident. The recollection prompts him to act, taking control of Alma's body to use martial arts to combat his adversaries. Once Alma connects him into one of the ship's ports, he quickly and easily hacks and seizes control of the machine, demonstrating the lethal power of his EX-ARM.

In a harmonious world Kotone Kazairo, a recently graduated magician, relocates to Dali, the Kingdom of Actus's royal capital, to start a fresh chapter in her life 15 years after the demon lord was vanquished. The 16-year-old visits Rent Plan Guide, a real estate company, in order to choose a place to call home (RPG). She encounters the company's personnel there, including the pragmatist priest Rufuria, the tomboyish warrior Rakira, and the endearing demihuman Fa. Kotone, who is also scheduled to work at RPG Real Estate, wastes no time in educating herself about the company from her coworkers. RPG Real Estate attempts to provide ideal matches for clients' individual demands despite having a wide range of housing options available to fit the many peculiarities of its diversified customer pool. However, it is not always simple. Nonetheless, Kotone and her coworkers are committed to making their clients happy, one home at a time!

High school student Mitsugu Banba believes that giving blood has significance. Despite the nurse's severe treatment, she often visits a blood bank to donate blood. At the blood bank one day, she meets a stunning girl who appears to be from abroad. The pale girl appears to be on the verge of passing out at any moment, but instead she begins to destroy the blood bank. Mitsugu brings the girl home when she loses consciousness.

A well-known AI TV fortune teller appears to accurately predict Asahi Kashiwagi's day in the near future, when technology has substantially improved. Aoi Izumisawa, Bai Mongfa, Karin Istel, Amelia Irving, and Ilya Ilyukhin are people he runs across on his route to school. Although Asahi has just met them, at the end of the same day, he unexpectedly hears confessions of love from each of them, exactly as the fortune teller had predicted. As if that weren't enough, Asahi discovers that his father has asked them to live at his house because they are truly contenders for the role of his bride. Due to lack of options, he unwillingly consents to their presence, which leads to an outrageous sequence of events that livens up his typical high school existence. Asahi spends more time with them, though, and over time, old memories start to come back. Asahi starts to think that his fate with these potential mates may be more than simply a coincidence as he unearths the underlying truth.

Sarasa Feed, a young girl, is sent in an orphanage where she learns about the elite field of alchemy when robbers murder her parents. She enrolls in the Royal Alchemical Academy to receive her formal alchemist training because she is determined to follow in the footsteps of her deceased parents and open her own business. Five years later, Sarasa completes her education at the college and comes very close to accomplishing her ambition before finding she is unable to afford it. She is forced to settle for a cheap storefront in a town located distant from the bustling capital because she has no other option. Sarasa starts her thrilling new life as an alchemist despite the dangers of perilous terrain and frightening monsters in the isolated countryside.

The best farmer he can be is Al Wayne's first priority. He puts his all into farming and masters it to the point where he can call himself a first-rate grower. Al's stats are significantly improved as a result of this accomplishment, surpassing even the strength of fabled historical heroes. The royal family seeks his assistance against the growing number of catastrophes that ironically started just as his true power was awakened shortly after learning of his potential. Al acknowledges that he must try his best to keep any dangers at bay in order to maintain his priceless crops, despite his reluctance.

Jirou Yakuin, a third-year high school student, has a crush on Shiori Sakurazaka, a classmate and childhood friend. He therefore hopes to be matched with her for the "marriage practical," which is a tradition at their school in which boy-girl pairings are chosen at random to live as mock married couples while being observed and graded on how close they have become. The vivacious Akari Watanabe wants to be paired up with her crush, the well-liked and attractive Minami Tenjin. Jirou and Akari are shocked to learn that Shiori and Minami have also been placed together, much to their dismay! Jirou and Akari are determined to be with their crushes, so they work hard to score as many points as they can because the top 10 pairs get to switch partners—as long as both couples are okay with it.

The day the crown prince Cedric Jeanne Elmir annuls Aileen Lauren Dautriche's engagement to him so he might date Lilia Rainworth, her life is changed forever. The incident brings up memories of Aileen's previous life, in which she had played the villain in an otome game and was doomed to die in the climactic scene. Aileen's last choice to avoid her predetermined doom is to pursue and wed Claude Jeanne Elmir, the game's final boss and self-proclaimed "Demon King," who is also Cedric's half-brother. However, since Claude doubts her motives, it is easier said than done. Instead of giving up, Aileen persistently strives to capture his heart by assisting Claude in achieving his goal of establishing harmony between humans and demonic animals. But as time is running out, Aileen must alter not only Claude's but also Claude's awful finale.

When a nameless sword awakens, he learns that he has been reincarnated from a previous existence as a person. He wanders across this new universe using his telekinesis power, picking up numerous skills and abilities. A little girl running from a beast is encountered by the sword as it enters a forest full with creatures. The girl takes out the monster with ease after grabbing the sword. She introduces herself as Fran, names the sword Shishou, and takes on the role of his wielder. The two decide to embark on an adventure, but sadly for Fran, she belongs to the Black Cat Tribe, a Beastkin clan with a dubious reputation. Fran intends to be the first of her tribe to transform into a more powerful beast, fulfilling her parents' wish. Shishou pledges to stay her sword until she achieves her objective, and together they forge an unbreakable alliance of astounding strength.

Denji is deprived of having a typical adolescent life and is left with nothing but the enormous debt owed by his absentee father. He kills devils for money that inevitably finds its way into the yakuza's pockets alone with his pet chainsaw devil, Pochita. All Denji can do is daydream of living a pleasant life with scrumptious food and a lovely woman at his side. But Denji's cruel, premature death is caused by a yakuza act of greedy betrayal, shattering all hopes of him ever finding happiness. Surprisingly, a long-forgotten contract enables Pochita to join with the dead Denji and provide him demon powers, turning him into a hybrid with the ability to change his bodily parts into chainsaws. Denji's new skills pose a serious threat to society, so Makima, an elite devil hunter with the Public Safety Bureau, takes him in and allows him to live as long as he follows her orders. Denji gives everything to and fights with all of his strength to bring his idealistic aspirations to fruition.

There are special kinds of "ultimate species" that possess extraordinary strength and magical ability and are thought to be at the pinnacle of power among all the monsters that walk the earth. Because of this, many people desire their skills, pushing some of these species dangerously close to extinction. Rein Shroud can use numerous animals' assistance for several duties, including logistics and reconnaissance, because he is a beast tamer. Due to his talent, he joins the evil and cunning hero Arios Orlando's party, only to be expelled after six months for being a non-combatant class. Rein is a rare beast tamer, albeit the squad who banished him was unaware of this. When he encounters Kanade, a cat spirit who is also one of the ultimate species, and is able to make a contract with her, his potential becomes clear. Rein embarks on his expedition with Kanade by his side, steadily moving up the rankings and encountering more ultimate species along the way.

It has been a century since "real magic," which was once regarded as only folklore and tradition, had developed into a widespread form of technology. One of Japan's nine magic academies, First National Magic University Affiliated High School (First High), accepts Miyuki and Tatsuya Shiba as two talented siblings. Based on the results of the entrance exam, First High divides its students into two groups, Course 1 and Course 2. The Course 1 students, who also refer to themselves as "Blooms," treat the Course 2 students with evident contempt by calling them "Weeds." While his sister Miyuki enrolls in Course 1 as an honor student, Tatsuya gets accepted into Course 2. Miyuki wants to prove to First High that, in spite of her brother's reputation as an amateur magician, he is actually one of the best in the world.

Kazuya Kinoshita, 20, has a great girlfriend named Mami Nanami who is cheerful and sunny. That is until one day when he is abruptly dumped, leaving him completely sad and alone. He uses an app to find a rental girlfriend in an effort to ease the pain. His companion is Chizuru Mizuhara, who charms Kazuya with her unrivaled beauty and sweet personality. Kazuya, however, thinks Chizuru's pleasant smile and caring nature were all simply a act to play with his heart and he evaluates her poorly after reading similar experiences other clients had had with her. Angered, Chizuru blasts him for his blatant hypocrisy while displaying her actual pert and irritable personality. However, Kazuya interrupts this one-sided conversation when he learns that his grandma had collapsed. As they race to the hospital, they discover Kazuya's grandmother already to be doing well. She wonders who this girl might be and is perplexed by Chizuru's presence. In an instant, Kazuya declares that they are in love.

Hideki "Rusian" Nishimura, a naive otaku, musters up the nerve to ask a girl he met in an online game outright, and is saddened by her response. And to make matters worse, the girl admits that in reality, she is an older man. In the midst of his rage-filled outburst, Rusian makes an impulsive decision: he will never again put his trust in a female he meets in an online game. His dreams dashed and his heart damaged. Years later, Rusian is now a member of a guild with three other players, one of whom has an Ako avatar. Ruslan is the love of Ako's life, and she wants to marry him. Despite considering the potential that she might be a man, Rusian agrees to her request and says it is irrelevant what gender she is as long as she is cute in-game. However, after a conversation among the guild members that resulted in an offline gathering of all of them, Rusian learns that Ako and the other members are not only girls but also his classmates.

In addition to having many people with samurai ancestry living there, Kawakami City is noted for having a strong sense of duty, devotion, and work ethic among its residents. Every day, whether they are preparing for tests, participating in sporting events, or making sure to uphold their traditions, the Kawakami Academy students put this information to work. One such student is Yamato Naoe, who has six close friends—three males and three girls—who function as the ideal unit for motivation, competition, and companionship. But even samurai have their limits. Even though their group's harmony and long-standing friendship have been maintained for a while, things start to get much more interesting when two new girls join. They are required to uphold what they believe to be the samurai tradition while also engaging in numerous "distractions."

The BETA, an alien species who invaded Earth in 1973, have been the target of a desperate, three-decade-long conflict that has gripped the entire globe. Takeru Shirogane, a high school student, abruptly awakens from a horrific nightmare in which he sees humanity in total defeat amidst this turmoil. Soon after, he understands that his dream was nothing more than memories of his time spent living in a another reality. In those recollections, the Alternative V project is put into action, saving mankind in the end by sending thousands of people into space while abandoning the other billion to an unjust fate. Takeru joins a military installation in Yokohama, which also happens to be his old high school, in an effort to alter this bleak destiny.