List of the Best Harem 18+ Anime You Must Watch. It is often that we get such amazing request of anime.Without any further delay, let’s start our list. **Numbers doesn’t show the rank of particular anime.
The balance of power in the planet has been toppled off with the development of armed powered exoskeletons coined as the Infinite Stratos, which was then regarded as the mainstream of weapons. While it has indeed created peace, only women are authorized to operate the IS, hence not only piloting it but paved the way for their domination.15-year old Ichika Orimura was soon discovered as the very first male possessing the ability to control the IS, his life was twisted towards one surrounded with an overwhelming number of school girls. Under the command of the Japanese government, he finds himself enrolled right into the entirely female Infinite Stratos Academy!
Rito Yuuki is a high school boy, struggling and bumbling to confess his love to his dream girl, Haruna Sairenji. The various daily obstacles he encounters are not helpful at all. Upon returning home and sulking in his bathtub one day, he finds his hands full with the breasts of a mysterious girl nude girl who popped out of nowhere!Coming from the planet Deviluke, Lala is heir to the throne. The father of this beautiful princess wants her back in their home planet for a fixed marriage, but she insists on marrying Rito in order to stay on Earth, where apparently accidental groping meant the engagement tradition of the other planet! Another obstacle for Rito in winning the love of his life, that is, if Lala doesn’t win him over.
Recent transferee student Kodaka Hasegawa, embarks onto Catholic high school St. Chronica’s Academy for another schoolyear. Same as always, he experiences difficulties making friends due to his naturally blond hair and delinquent but dangerous appeal, at least what fellow students think, and a reputation he just can’t manage to shake off.On a typical day, he overhears the aloof and bad-tempered solitary classmate of his, Yozora Mikazuki, avidly chatting with her imaginary friend Tomo, realizing that she’s just as lonely as he is! Neither having social lives, they founded the Neighbor’s Club with the intention of recruiting members and new friends. Other lonely students eventually join, and together they form a wonderful friendship filled with many group activities like cooking together, playing RPGs, swimming, and venturing out for delicious takoyaki. Misfits as they are, would they get along with each other harmoniously?
One of the original harem anime, the story revolves around Keitaro Urashima, who made a childhood promise to a girl that they’d attend Tokyo U together. Unfortunately, he ranked extremely low in the National Practice Exam, so his resolve was to stay at his grandmother’s hotel while continuing his studies. Little did he know, the hotel had been transformed into an all-girls dormitory, and now Keitaro’s become the manager! How will he manage to focus on his studies, nonetheless his promise when he’s living with 5 other girls?
Set in a slightly futuristic world where Earth has been invaded and is at war with aliens from another dimension called the Nova, the story follows the adventures of a Japanese boy named Kazuya Aoi who enrolls for training at a special school for genetically modified girls called Pandoras who battle the aliens, and their male partners, called Limiters, who use a special power called “freezing” to limit their opponent’s mobility. The protagonist makes the acquaintance of an unusual older girl named Satellizer el Bridget who appears to be the most powerful Pandora in her class, but has not yet chosen a male partner to be her Limiter, and in spite of the warnings of all his friends, he decides to be her Limiter.
A romantic comedy which can also be serious at times, this school story revolves around Arata Kasuga, the world he lives in, and the Trinity Seven. A queer incident called the Collapse Phenomenon shatters the world into destruction and captures his cousin, Hijiri Kasuga. Pride, Envy, Greed, Gluttony, Wrath, Sloth, and Lust- these are the seven sins laid upon these seven beautiful girls ruling over the Royal Biblia Academy. To regain his world and rescue Hijiri, Arata decides he must control these sins in the form of these female magic users!
4.Yamada-Kun and the Seven Witches
Upon entering high school, Ryuu Yamada wanted to put his delinquent past behind him. Finding it hard to change his ways, he’s already heading back from another visit to the office when he slams into Urara Shiraishi, ace student and beauty of Suzaku High. An accidental kiss switches their bodies, and with this new ability, they join the Supernatural Studies Club. Their goal: tracking down the Seven Witches of Suzaku High that also possess different abilities. Gotta Kiss ‘Em All.
3.Is This a Zombie?
On his way home from the convenience store, Ayumu Aikawa is murdered in cold blood by a serial killer. Brought back to life by friendly neighborhood necromancer Eucliwood Hellscythe, he’s now a zombie. It doesn’t stop there. After accidentally taking a magical girl’s uniform (along with her powers), Ayumu is now a cross-dressing zombie mahou shoujo and it’s up to him to battle the demons known as Megalos while uncovering the mystery of his own death. Thankfully, he has the help of his savior Eu, ex-magical girl Haruna, and a vampire ninja named Seraphim as they now all share the same roof.
2.The Familiar of Zero
Louise Françoise Le Blanc de La Vallière (let’s just go with Louise from now on..) is widely known at Tristain Academy as “Louise the Zero”, due to her inability to cast magic properly. During a summoning ritual assessment, she causes a giant explosion that ironically results in bringing an ordinary boy from Japan named Saito Hiraga into their world. Now as Louise’s familiar, Saito is subject to being treated as her slave, and the story follows their adventures as Saito attempts to find a way to return home while Louise looks to prove the Academy wrong.
Raku Ichijou, a first-year student at Bonyari High School, is the sole heir to an intimidating yakuza family. Ten years ago, Raku promised his childhood friend that they would get married when they reunite as teenagers. To seal the deal, the girl had given Raku a closed locket, the key to which she took with her when she left him.Now, years later, Raku has grown into a typical teenager, and all he wants is to remain as uninvolved in his yakuza background as possible while spending his school days alongside his middle school crush Kosaki Onodera. However, when the American Bee Hive Gang invades his family’s turf, Raku’s idyllic romantic dreams are sent for a toss as he is dragged into a frustrating conflict: Raku is to pretend that he is in a romantic relationship with Chitoge Kirisaki, the beautiful daughter of the Bee Hive’s chief, so as to reduce the friction between the two groups. Unfortunately, reality could not be farther from this whopping lie—Raku and Chitoge fall in hate at first sight, as the girl is convinced he is a pathetic pushover, and in Raku’s eyes, Chitoge is about as attractive as a savage gorilla.