For obvious reasons, not everyone enjoys ecchi, but if you enjoy this genre, you’ll enjoy these anime.
Shounen, Shoujo, Seinen, and other genres are popular in Japanese anime. These genres are further subdivided into numerous sub-genres. Ecchi and isekai are two examples of such subgenres. These two subgenres have grown in popularity among fans in recent years.
Ecchi anime are usually anime with a lot of fan service, but there are some anime that push the limits of fan service to the point where you wonder if you’re watching a hentai or an anime. In the anime world, these shows are known as “Borderline Hentai Anime.”
Today, we’ll be listing 16 of such anime. So without further ado, let’s begin with the 15 Best Borderline Hentai Anime (Recommendations)
Best Borderline Hentai Anime
15. Kiss x Sis
Keita Suminoe’s father remarried after his mother died, bringing two step-sisters into his life: twins Ako and Riko. However, since their fateful first meeting, the girls have been overcome by an incestuous love for their younger brother, sparking a lifelong rivalry for his heart.
Keita, who is nearing the end of his middle school career, works hard in order to attend the high school of Ako and Riko. He must reconcile his conflicting feelings for his siblings and decide whether to reject or accept his sisters’ intimate advances while doing so. Unfortunately for Keita, his sisters aren’t the only women lusting after him, and there’s no telling when the allure of temptation will overcome him.
14. Why the Hell are You Here, Teacher!?
Ichirou Satou, a second-year high school student, has always been an average person—that is, until he meets his teacher, Kana “The Demon” Kojima, and finds himself in some not-so-average situations. Satou’s Japanese language teacher, Kojima, is so ruthless that even school delinquents submit to her. When Satou runs into Kojima in the restroom one fateful day, they share an intimate encounter that sends his imagination into overdrive.
Why the Hell are You Here, Teacher!?
follows the daily life of Satou and his teacher as they continue to meet under similar conditions, growing ever closer with each encounter.
13. Redo of Healer
Keyaru appeared to have a bright future when he gained his abilities as a Hero who specialised in healing all injuries regardless of severity. Instead, he endured excruciating agony as a result of years of seemingly never-ending hellish torture and abuse. Keyaru’s healing abilities allowed him to steal the memories and abilities of those he treated, gradually strengthening him to the point where he was stronger than everyone. But by the time he realised his full potential, he had already lost everything.
Keyaru, determined to reclaim his life, cast a powerful healing spell that rewound the entire world to before he began to suffer his terrible fate. He vows to redo everything in order to fulfil a new purpose—to exact revenge on those who have wronged him.
12. High School DxD
Issei Hyoudou, a high school student, is your typical pervert, spending his days peeping on women and fantasising about one day having his own harem. Things appear to be looking up for Issei when a beautiful girl asks him out on a date, but she turns out to be a fallen angel who brutally kills him! However, he is given a second chance at life when Rias Gremory, a beautiful senior student and top-class devil, resurrects him as her servant and recruits Issei into the school’s Occult Research club.
As he adjusts to his new life, Issei must train and fight to survive in the violent world of angels and devils. Each new adventure brings many hilarious (and risqué) moments with his new comrades, all while keeping his new life hidden from his High School DxD friends and family!
11. Testament of Sister New Devil
Basara Toujou discovers the hard way that bumping into your new stepsister in the restroom is not the best way to make a good first impression. He is forced to accept the Naruse sisters, busty redhead Mio and petite silver-haired Maria, into his family when his father unexpectedly brings home two beautiful girls and introduces them as his new siblings.
When these seemingly normal girls reveal themselves as demons—Mio, the former Demon Lord’s only daughter, and Maria, her trusted succubus servant—Basara is forced to reveal himself as a former member of a clan of “Heroes,” sworn enemies of the demons. Basara, on the other hand, has begun to care for his new sisters and decides to protect them with his powers, signing a master-servant contract with Mio to keep an eye on her.
With the Heroes watching his every move and the constant threat of hostile demons, Basara must do the impossible to protect his new family members. Furthermore, the protector is concealing his own dark secret, which haunts him to this day…
10. Prison School
The prestigious all-girls boarding school Hachimitsu Private Academy, located on the outskirts of Tokyo, is known for its high-quality education and disciplined students. This is about to change, thanks to a change in the school’s most famous policy, which now allows boys to enrol.
Only five boys were accepted at the start of the first semester under this new decree, effectively dividing the student body into two hundred girls to one boy. Kiyoshi, Gakuto, Shingo, Andre, and Jo are quickly dismissed before they have a chance to make an impression. Because they couldn’t communicate with their female classmates, the eager boys took on a far more dangerous mission: peeping into the girls’ bath!
After the infamous Underground Student Council decimates their plan, the motley crew’s freedom is abruptly taken away, as they are thrown into the school’s prison and sentenced to an entire month in prison. The story of the boys’ harsh lives in Prison School begins here, a righteous struggle that will eventually put friendship and perverted brotherhood to the test.
9. Interspecies Reviewers
There are numerous races in the world, ranging from perky fairies to oozing slimes. Naturally, such a diverse collection of creatures has a plethora of enticing brothels. It’s difficult to choose which succu-girl to have a meaningful, interpersonal experience with when there are so many options.
Fortunately, a small group of brave warriors has formed to educate the public. These perverted adventurers assess the appeal of various types of succu-girls through hands-on research. Whether it’s the scorchingly hot salamanders or the udderly hu-moo-ngous cow-girls, the Yoruno Gloss reviewers leave no species behind.
Interspecies Reviewers, directed by the same man who brought you Miru Tights, aims to answer one of the most pressing questions: which species is the sexiest?
8. Gantz
Did you believe your life was hopeless? Death can be terrifying at times. There is no salvation, no peace, and no god awaiting your arrival. But wait a second, a god? Perhaps you’re referring to the large black ball that has become entrapped in your room. You’re now trapped in a game, fighting for your life against green aliens and robot monsters.
When Kei Kurono is assassinated, he finds himself in the middle of a game—a test of his abilities, morals, and will to live. His life is not his own, and his death is repeatedly spat upon and trampled on. What if he doesn’t want to listen? Only God knows.
A word of warning: Gantz is not for the faint of heart, nor is it as straightforward as it appears. Gore, rape, and violence are common, as are depictions of greed, violence, and the ugliness of society.
7. World End Harem
Reito Mizuhara, a medical student at Tokyo’s National Advanced Medical School, has cellular sclerosis, a fatal disease. In order to be treated, he is placed in cryogenic sleep for five years. When he awakens, a worldwide pandemic has broken out a year into his slumber, caused by the novel Male Killer (MK) virus, which only affects males and has killed all other men on Earth.
Reito and four other men were thankfully spared during their cryosleep and are now virus-free. They must mate with as many women as possible in order to repopulate the planet as the only men left. Reito, on the other hand, is devoted to his childhood friend and sole love interest, Elisa Tachibana—until he discovers she has been missing for three years. While the other male survivors adjust to their new surroundings, Reito chooses to pursue Elisa, battle insurmountable temptation, and investigate the mysterious virus.
6. Sekirei
Minato Sahashi, a bright but struggling 19-year-old, has failed his college entrance exams for the second time, making him worthless in the eyes of those around him. When a beautiful, supernatural woman falls from the sky and into his life, his seemingly bleak future is dramatically altered. Musubi is a one-of-a-kind “Sekirei,” a humanoid extraterrestrial with exceptional abilities. These aliens are known for kissing humans in order to awaken additional latent powers deep within.
Musubi kisses the befuddled Minato, forming a bond between them, recognising the potential in the seemingly insignificant youth. This propels him into the high-stakes world of the Sekirei, where he and his new partner must compete against others in the “Sekirei Plan,” a survival battle. The contestants, however, are unaware that there is far more at stake than the competition itself.
5. Hybrid × Heart Magias Academy Ataraxia
Hida Kizuna possesses the HHG (Heart Hybrid Gear) ability, but it is insufficient to make him particularly useful. His older sister summons him to a strategic defence school, where many of the students (many of whom are large-breasted girls) fight invaders from another world while dressed in extremely skimpy pilot outfits. Kizuna’s fighting skills are lacking, but his sister has a different plan: having erotic experiences with Kizuna will apparently allow the girls to replenish their energy or power up. His new school life appears to be full of embarrassment.
4. Monster Musume: Everyday Life With Monster Girls
While his parents were away, Kimihito Kurusu lived a quiet, unremarkable life until monster girls crowded in! This alternate reality depicts cutting-edge Japan, the first country to promote the integration of non-human species into society. After the incompetence of interspecies exchange coordinator Agent Smith leaves him as the homestay caretaker of a Lamia named Miia, Kimihito quickly attracts girls of various breeds, resulting in an ever-growing harem flush with eroticism and attraction.
Unfortunately for him and the ladies, the Interspecies Exchange Act forbids interspecies sexual interactions! The only exception is a provision for experimental marriage. Kimihito’s life becomes fraught with creature-specific caveats and sensitive interspecies law as the passionate, affectionate, and lustful women hound his every move, seeking his romantic and sexual affections. With new species appearing all the time and events seemingly appearing out of nowhere, it’s anyone’s guess where Kimihito and his harem will end up!
3. Harem in the Labyrinth of Another World
Michio Kaga, a high school student, tries to launch a strange online game he discovered one day while browsing the internet. Instead, he is transported to the game’s world and given special abilities as well as a powerful sword. He finds himself fighting bandits after gathering his thoughts and quickly realises that he cannot log out. Michio, accepting his fate and embarking on a journey to enjoy his new life, conquer dungeons for money, and build a harem to satisfy all his manly desires, sets out on a journey to enjoy his new life, conquer dungeons for money, and build a harem to satisfy all his manly desires.
2. Yosuga no Sora
Haruka and Sora Kasugano’s parents were killed in a tragic accident. They start over, returning to their childhood home and living in the rural, quaint town they left four years ago.
Returning to such a nostalgic location, on the other hand, entails recalling all of their shared memories, whether they brought them blissful joy or painful sorrow. Haruka and Sora’s story becomes increasingly complicated as their lives are gradually influenced by various acts of love, friendship, envy—and perhaps even lust.
1. To LOVE-Ru Darkness
Close encounters of the twisted variety continue to escalate between the inhabitants of the planet Develuke (primarily represented by the female members of the royal family) and the inhabitants of Earth (represented primarily by one very exhausted Rito Yuki). Junior princesses Nana and Momo SHOULD have a smooth transition to Earth School, where big sister LaLa can (theoretically) keep an eye on them. When Momo decides to “supplement” Rito and LaLa’s relationship with some “sisterly love,” you know LaLa isn’t going to waste time splitting harems.
Unfortunately, Yami, the Golden Darkness, appears with the subtlety of a supernova, accompanied by an army of possessed high school students! All of this will make Rito’s life as miserable as a black hole at the family picnic. Unless, of course, a certain semi-demonic princess can apply a little Develukean Whoop Ass to exactly that portion of other celestial bodies!
BONUS: Immoral Guild
Kikuru Madan, a monster hunter with excellent performance due to his specific job in the forest, decided to quit because he was afraid of wasting his own youth… However, in order to leave his current job, he must train some new recruits with dubious abilities in order to keep the town safe. But, instead of assisting Kikuru with monster hunting, they continue to be attacked by monsters, albeit in a different way…
That was it for the list, let us know what’s your favorite questionable anime from this list in the comments below!