Anime Like Guardian Hearts

High school student Issei Hyoudou is a typical pervert who spends his days peeping on girls and fantasizing about having a harem. Things take a turn when a beautiful girl asks him out, only for her to reveal herself as a fallen angel and brutally murder him. But he gets a second chance when Rias Gremory, a beautiful senior and top-class devil, revives him as her servant and recruits him into the school's Occult Research club. Now adjusting to his new existence, Issei must train and fight to survive the violent world of angels and devils. Each adventure brings hilarious and risqué moments with his new comrades, all while keeping his secret life hidden from his friends and family in High School DxD.

Issei Hyoudou, the high school pervert and future Harem King, finds his adventures continuing in High School DxD New. While the Occult Research Club goes about its usual routine, it becomes clear that something is amiss with their Knight, Yuuto Kiba, who has lost his usual composure and alertness. Issei soon uncovers the dark and bloody history of Kiba, linking it to the enigmatic Holy Swords. Once the victim of a cruel experiment, Kiba now desires vengeance against those who harmed him. With the return of a familiar foe and the arrival of two new beauties wielding Holy Swords, Issei and his Devil allies are once again dragged into a sinister scheme.

Following the crimson sun's disappearance, the Breakdown Phenomenon strikes Arata Kasuga's town, causing everyone to vanish. His world is not completely lost, though, because his childhood friend and cousin, Hijiri Kasuga, gives him a magical grimoire that artificially rebuilds reality. To look into this disaster, Lilith Asami arrives and gives Arata a choice: hand over the book or die. Instead, Arata picks a third option: enrolling at the secretive Royal Biblia Academy, where he meets six other magic users. Along with Lilith, these six make up the Trinity Seven, the school's elite each possessing unique powers and abilities. Driven by his wish to save Hijiri and aided by his new allies, Arata leaves no stone unturned in his quest to stop his hometown's destruction and bring his best friend back to life.

Louise Françoise Le Blanc de La Vallière is a proud mage in a world defined by wands, cloaks, and nobility. She attends the esteemed Tristain Academy for mages but fails at casting spells correctly, earning her the mocking nickname "Louise the Zero" from her classmates. During the required first-year familiar summoning ritual, Louise's attempt produces a massive explosion. Everyone dismisses it as another failure, but when the smoke clears, Saito Hiraga appears. He is treated like a slave, forced to clean Louise's clothes and eat off the floor. However, a strange mark resembling the legendary familiar Gandalfr appears on his hand, hinting that he is no ordinary summon. In this wild, adventurous, and explosive tale, Saito must adapt to his new life while Louise discovers she is far more than her humiliating nickname suggests.

Transferring to a new school, Kodaka Hasegawa wants to make a positive first impression and find friends. However, his blond hair and intimidating looks cause everyone to assume he is a violent troublemaker. After a month, he remains alone because of this false reputation. His situation changes when he meets Yozora Mikazuki, another social outcast, talking to an imaginary friend in an empty classroom. Connecting over their mutual isolation, they create the Neighbor's Club with the goal of helping members acquire social abilities and fit into society. With the arrival of eroge fan Sena Kashiwazaki and other unconventional misfits, Kodaka thinks he has finally discovered the nakama he longed for among these amusing oddballs.

As summer break arrives for the students of Kuoh Academy, the Red Dragon Emperor Issei Hyoudou and the Occult Research Club are back in action. Their battle against Issei's sworn enemy Vali and the Chaos Brigade made it evident just how inexperienced Rias Gremory's team is. To prepare for the trials ahead, Rias and Azazel lead the club through a rigorous training program in the Underworld. While the team gradually matures together, Issei once again finds himself in intimate situations with the girls of the Occult Research Club. Meanwhile, their opponents grow stronger and more numerous as they gather their forces. And with the sudden arrival of Loki, the Evil God of Norse Mythology, the stage is set for epic battles and fearsomely powerful devils in High School DxD BorN!

While his parents are away overseas, Kimihito Kurusu enjoys a quiet, normal life—until monster girls arrive and disrupt his peace. In this alternate Japan, the country leads global efforts to integrate non-human species through its advanced interspecies exchange program. But thanks to coordinator Agent Smith's incompetence, Kimihito is mistakenly made the live-in caretaker for Miia, a Lamia. This error turns him into the center of a rapidly growing harem of women from various species, all drawn to him by powerful attraction and erotic tension. The situation grows more complicated due to the Interspecies Exchange Act, which strictly forbids sexual relations between humans and monsters. The only legal way around this ban is a controversial experimental marriage clause. As a result, Kimihito's life descends into chaos as he navigates a maze of species-specific rules and sensitive legal loopholes. His passionate, affectionate, and lustful new housemates constantly pursue his romantic and physical attention. With new monster girls frequently appearing and unpredictable events always happening, it's impossible to guess where Kimihito and his chaotic harem will end up next.

In the MMORPG Cross Reverie, the Demon King Diablo stands unmatched in power. With the game's most coveted items and a maxed-out player level, he crushes any challenger with ease. Yet behind the screen, Diablo is Takuma Sakamoto—a socially awkward recluse whose only passion is his gaming life, even as he steamrolls endless foes. His routine is broken when a summoning spell drags him into a world that looks just like the game, where he keeps Diablo's form. There, he finds his summoners: Rem Galeu, a small Pantherian adventurer, and Shera L. Greenwood, an Elf summoner. They try to use an Enslavement Ritual to control him, but the magic backfires, making them his slaves instead. Trapped in this awkward situation, Takuma sets out with the girls to find a way to break the contract while adapting to his new life as the feared Demon King.

It has been one year since Sagiri Izumi and Masamune Izumi became step-siblings, but the loss of their parents shattered their new family dynamic. As a result, Sagiri withdrew into herself, becoming a shut-in who isolated herself from both her brother and the world beyond. Trying to keep his life together, Masamune supports himself by writing light novels, though he faces a peculiar problem: he has never met his famous illustrator, Eromanga-sensei, known for producing highly erotic artwork. Through a series of awkward incidents, Masamune discovers that his reclusive younger sister is actually the artist behind his success. As new characters and challenges arise, the siblings must navigate the light novel industry together. The story follows their evolving bond and their struggle for recognition, while also examining how long Sagiri can maintain her hidden identity as she gradually begins to open up to the world.

Youkai Academy appears to be a typical boarding school, but its entire student body consists of monsters trying to coexist with humans. The students attend classes disguised as ordinary humans, studying standard subjects such as literature, physical education, foreign languages, and math. However, beneath this veneer, the school enforces a strict rule: any human discovered on the premises must be executed immediately. Tsukune Aono is an ordinary high school student whose failing grades prevent him from entering any secondary school. Desperate to secure an education, his parents accidentally enroll him at Youkai Academy as a last resort. Once inside this hidden world, he encounters Moka Akashiya, the most popular and attractive girl at the school. Eager to pursue a relationship with her, he decides to remain at the dangerous institution, unaware that her beautiful exterior conceals a terrifying vampire nature. Rosario + Vampire is a supernatural school comedy that follows Tsukune’s romantic endeavors, daily life, and various misadventures as he navigates existence among a host of beautiful yet perilous supernatural beings.

Tomoya Aki is an otaku who has spent years collecting anime and light novels, immersing himself in series with compelling stories and characters. Now he wants to give others the same experience by making his own game, but he cannot accomplish this alone. He successfully gets his childhood friend Eriri Spencer Sawamura on board as the illustrator and the literary elitist Utaha Kasumigaoka to pen the script for his visual novel, with himself acting as director. With this super-group assembled, Tomoya just needs a source of inspiration for his project, and he happens to meet the beautiful, gentle Megumi Katou, whom he then uses as the basis for his main character. Armed with whatever knowledge he has, Tomoya forms a new doujin circle, hoping to move the hearts of everyone who plays their game. What he doesn't realize is that in order to evoke those emotions, the creators themselves must have experienced similar feelings in their own lives.

A century ago, a massive catastrophe called the Invertia transformed the world, weakening established countries and allowing the Integrated Empire Foundation to gain power. This event also created the Genestella—humans with superhuman abilities. The most talented among them are chosen to attend elite schools, where they battle in public tournaments known as Festas. Ayato Amagiri transfers to the struggling Seidoukan Academy on a scholarship. After accidentally seeing Julis-Alexia von Riessfeld, the Witch of Resplendent Flames, in an embarrassing situation, she demands a duel. Though the match is called off, Ayato makes it clear he has no interest in Festas; he came to search for his missing older sister. But as a dark plot unfolds, Ayato must fight to survive, surrounded by some of the most powerful Genestella in the world.

Rito Yuuki is a bashful sixteen-year-old boy who has secretly liked his classmate Haruna Sairenji ever since middle school but has never mustered the bravery to tell her. His life is thrown into chaos one night when a mysterious, naked girl lands in his bathtub. He discovers that this intruder is Lala Satalin Deviluke, an alien princess on the run from an arranged political marriage. Despite hailing from a vast galactic empire, Lala proposes to the ordinary Rito to avoid her forced union. To LOVE-Ru chronicles Rito’s efforts to handle the turmoil set off by Lala’s presence. His attempts to court Haruna are perpetually disrupted by an ever-growing array of attractive girls, leading to a romantic comedy filled with slapstick gags, risqué humor, and absurd, physics-defying scenarios.

Japan created the Infinite Stratos, a powered exoskeleton that only women can pilot, and its immense destructive power led to a global treaty banning its military use. When fifteen-year-old Ichika Orimura is discovered to be the only male capable of operating an IS, he is forced to attend the Infinite Stratos Academy—an all-girls boarding school where students train as IS pilots. There, Ichika reunites with childhood friends Houki Shinonono and Lingyin Huang, and also grows close to Cecilia Alcott, the representative of the United Kingdom. Under the strict supervision of Chifuyu Orimura, his older sister and their homeroom teacher, Ichika and his female classmates must use their abilities to defend themselves and their school from the dangers that arise during their exciting school life.

Since childhood, Chihiro Furuya has been obsessed with zombies, dreaming of having an undead partner. His fascination becomes practical when his cat, Baabu, is hit by a car, prompting Chihiro to create a resurrection elixir in hopes of reviving the pet. While experimenting, he meets Rea Sanka, a wealthy girl who releases her frustrations about her oppressive home life by shouting into an abandoned well. After bonding with her, Rea encourages Chihiro to continue his work, and he eventually succeeds using poisonous hydrangeas from her family’s garden. Unaware that the potion works, Rea drinks it hoping to end her suffering, believing it will kill her. Instead, the potion’s magic interacts with a fatal accident, causing her to rise as a zombie. With Chihiro’s help, she tries to navigate her new existence. Though this might seem perfect for a boy seeking a zombie girlfriend, life in Sankarea becomes increasingly strange as Chihiro must manage Rea’s unusual new appetites and the unexpected consequences of her transformation.

After their mother passes away, Keita Suminoe’s father remarries, introducing him to twin sisters Ako and Riko. The twins immediately develop an intense, forbidden attachment to their younger brother, leading to a constant competition to capture his heart. As Keita approaches the end of middle school, he focuses on his studies with the aim of attending the same high school as Ako and Riko. At the same time, he must grapple with his own mixed feelings and determine whether to fight against or succumb to their romantic advances. Complicating matters further, Keita is not the sole target of unwanted interest, exposing him to the risks of such temptations.

After being dumped by a woman he married in an online game, only to discover she was actually an older man, gullible otaku Hideki "Rusian" Nishimura decides he will never trust a female player again. Years later, Rusian joins a guild with three others, including a player with a female avatar named Ako. Although Ako confesses her love and proposes to him, Rusian is wary that she might be a guy, yet he accepts because she is cute in-game. Things take a turn when the guild decides to meet offline, revealing that Ako is not only a real girl but also his school classmate.

After his lecherous friends play a prank on him, Junichi Hashiba asks out a gal to prove he is not a hopeless virgin. Yukana Yame is initially repulsed by Junichi’s desperate begging, but through some teasing, she begins to bond with him and eventually accepts his confession, surprising him greatly. The story follows Junichi as he battles his low self-esteem and controls his sexual impulses while navigating a new school life filled with vibrant girls and chaotic situations.

Seeking to make the world a better place, Akuto Sai enters Constant Magic Academy and befriends Junko Hattori, who comes from a prestigious ninja family. They vow to build a brighter future together, but this dream collapses when Akuto’s presence awakens a prophecy that labels him the Demon King. As whispers spread, the school turns hostile and Junko’s trust begins to falter. Although Akuto fights against this destiny, his deeds inadvertently reinforce his image as a villain. His situation grows more complex with a harem of captivating girls holding opposing motives, ranging from wanting to punish him to showing him affection. Leveraging his growing powers, Akuto struggles against his mounting bad luck to prove that his fate is not fixed.

The Neighbor's Club, founded to help lonely students make friends, remains a sanctuary for its unlucky members. Even after a major incident at summer's end, Yozora Mikazuki and the group return to their usual routine. But the arrival of a strange nun, student council members, and other newcomers adds fresh complications, making Kodaka Hasegawa's schedule more chaotic than ever. As the club takes part in typical high school activities—visiting amusement parks, playing games, and preparing for the school festival—the relationships among the members gradually evolve. This marks the start of a new chapter in their heartfelt yet awkward coming-of-age love comedy.

After successfully rescuing his master, Rias Gremory, from the Dimensional Gap, Red Dragon Emperor and aspiring Harem King Issei Hyoudou can finally return to his normal high school routine alongside Occult Research Club members Yuuto Kiba, Asia Argento, Xenovia Quarta, and Irina Shidou. The group embarks on a school trip to Kyoto, but their visit to a temple is disrupted by an assault from local youkai. Following the skirmish, the club learns that the mythical nine-tailed fox protecting the city has been abducted and that they are falsely accused of the crime. Issei and his friends must fight to clear their names, save the trip, and protect the city from impending disaster. Meanwhile, Rias, who stayed behind in Tokyo with Akeno Himejima and Koneko Toujou, grows increasingly uneasy about leaving the perverted Issei alone with the other club girls. Beneath her vague anxiety lies a deeper question: what are the true feelings Rias has been struggling with for the past few months?

Celebrated as heroes for protecting Tristain, Louise Françoise and her familiar Saito Hiraga face tremendous pressure to safeguard the Kingdom. Across the sea, Albion enjoys a fragile truce, but the newly crowned Queen Henrietta must navigate growing political turmoil and a shadowy villain scheming against her rule. Confronted by persistent threats, Louise and Saito are forced to work together once more. No longer weighed down by her old nickname "Louise the Zero," the young mage now wields Void magic powerful enough to destroy an entire village, yet mastering this ability remains a considerable challenge. As tensions mount, the ideal of selfless loyalty is put to the test, but Louise and Saito remain determined to fulfill their duty until the very end.

Kinjirou Sakamachi has grown up with a mother and sister who are devoted to professional wrestling, resulting in a body tough enough to endure brutal punches, aggressive kicks, and even impacts from cars to survive their moves. Despite his physical strength, he suffers from severe gynophobia—a paralyzing fear of women. Any contact with a female causes his nose to bleed, profuse sweating, and occasional fainting. His life changes drastically after a restroom encounter where he discovers that Subaru Konoe, the school's most popular student and butler to principal's daughter Kanade Suzutsuki, is actually a girl. Startled, Subaru attacks Kinjirou, knocking him unconscious. When he wakes, Kanade offers to help cure his phobia in exchange for keeping her butler's secret.

When computers begin to resemble humans, does the concept of love remain unchanged? Hideki Motosuwa is a young boy from the countryside working hard to pass his college entrance exams. Coming from a poor family, he can barely afford his everyday expenses, let alone the latest trend: Persocoms—personal computers that look exactly like human beings. One evening on his way home, he stumbles upon an abandoned Persocom. After taking her home and successfully turning her on, she appears to be faulty, able to say only one word: "Chii," which becomes her name. Unlike other Persocoms, Chii cannot download data onto her hard drive, forcing Hideki to teach her about the world the old-fashioned way while simultaneously studying for his college exams. Together with his friends, Hideki attempts to solve the mystery behind Chii, who might be a "Chobit"—an urban legend about special units capable of genuine human emotions and thoughts, along with love for their owner. But can a romance truly develop between a Persocom and a human?