There is nothing like a manga with harem elements and a main character who is massively overpowered. So, here is our list of the best harem manga with an OP main character.
The Hidden Dungeon Only I Can Enter
Noir was born into the lineage of a minor noble. He finds himself possessing little beyond a job offer, which is revoked on the day of his debut.
Despite his meager possessions, he has a rare gift: the ability to commune with a revered sage, albeit at the cost of numbing headaches.
Adrift in uncertainty, he seeks guidance from the sage, who points toward a hidden dungeon full of mythical creatures and enchanted artifacts.
Here, Noir embarks on a journey of training, gathering both skills and riches until he wields enough power to reshape his destiny.
The Hidden Dungeon Only I Can Enter is a fantasy, harem, and ecchi manga where Noir’s abilities push his standing within the Hero Academy to unprecedented heights.
How NOT to Summon a Demon Lord
In a world beyond his screen, a skilled yet socially challenged gamer is thrust into a new existence as Diablo, his in-game persona.
Despite his powerful abilities, his social awkwardness proves a hindrance. Determined to adapt, he takes on the guise of a Demon Lord.
Soon, he acquires two companions, a feline-like girl and a beautiful elf, who are bound to him as servants.
United, they face trials ranging from navigating personal connections to confronting dangerous beasts in battles.
The main character Takuma Sakamoto is ridiculously overpowered, making this manga an exciting one.
Chained Soldier
Chained Soldier is an action and fantasy manga with heavy harem elements.
In the manga, mysterious spaces called demon cities emerged across Japan, offering special powers to those who consumed the peaches within, though exclusively bestowed upon girls.
Yuuki Wagura, a depressed high school student, finds himself in the gateway of one such city.
Here, he encounters Kyouka Uzen, the gorgeous commander of the Magical Defense Corps, comprising seven powerful units.
She demands his loyalty, ordering him to become her slave.
Sekirei
Minato is a failure in life. But then one day, he encounters a mysterious girl named Musubi who changes his destiny.
She reveals herself as a Sekirei and grants Minato the power of an Ashikabi, thrusting him into a battle royale where he must gather Sekirei with unique abilities.
Through this journey, Minato discovers his true potential and strength, transforming from a loser to a force to be reckoned with.
Can Minato truly become one of the most powerful and collect Sekirei with mind-boggling abilities?
IS: Infinite Stratos
In the halls of IS Academy, aspiring pilots from every corner of the globe come together to master the art of controlling IS units.
Among them is Orimura Ichika, the only male able to pilot these powerful machines.
Despite his unique talent, he finds himself thrust into IS Academy's world of feminine excellence alongside his childhood friend, Houki.
Amid the whirlwind of battles and blossoming romance, Ichika navigates his way as the lone male in a sea of diverse female peers.
What’s your favorite harem manga with an OP main character? Share your picks with us in the comments section below.