Below are some of the best harem battle manga currently available.
9. Aiki

If you read just one chapter of “Aiki,” you will certainly notice the “intense heat” right from the start. If you read two chapters, you might feel “overwhelmed,” and if you follow the entire series, you will definitely witness an incredibly captivating manga filled with stunning battle scenes and steamy images that also carry a humorous tone.
The main character, Aiki, not only possesses exceptional martial arts skills but also has an insatiable appetite for women, leading to a plethora of hilarious and suggestive encounters. Many have even remarked that Aiki could be considered a dark and super-powered version of “Kenichi: The Mightiest Disciple.”
8. To Love Ru

The story follows Yuuki Rito, a shy high school student who is too afraid to confess his feelings to his classmate, Sairenji Haruna. One day, while he is lost in thought, Lala, a princess from the planet Deviluke, suddenly appears before him. Her father, the king of Deviluke, wants her to marry one of the suitors who are pursuing her. However, Lala decides to marry Rito and runs away from her home planet.
Lala is determined to win Rito’s heart and becomes increasingly close to him. However, things get complicated when she discovers that Haruna also has feelings for Rito.
7. Omamori Himari

The plot revolves around Yuto Amakawa, a normal teenager dealing with a complicated past. Five years ago, he lost his family in a car accident and has since lived alone without any relatives. His childhood friend, Rinko Kuzaki, has been secretly watching over him.
On his 16th birthday, he meets Himari, a cat-girl samurai. Himari reveals that she has come to protect Yuto from various demons who wish to harm him, as he is part of a legacy tied to ancient battles. However, Yuto’s cat-like charm makes things much more complicated, as he encounters other girls who also develop feelings for him, including Shizuku, Lizlet, and Kuesu.
6. Sekirei

Sekirei tells the story of ordinary people who are thrust into a grand battle for survival in a world filled with powerful beings. Minato is a smart, timid boy lacking confidence. However, he meets Musubi, an extraterrestrial being known as a Sekirei, who recognizes his potential as her ‘ashikabi’ and empowers him to fight alongside her.
5. Rosario + Vampire

Rosario + Vampire is a delightful mix of comedy and supernatural elements set in a school for monsters. The main character, Tsukune, becomes the center of attention among various beautiful monster girls. However, he is also the only human in a school designed to cater to the needs of monsters.
Tsukune’s luck begins to change when he befriends Moka, a vampire girl who is drawn to his blood. She helps him navigate the challenges of living in a world filled with monsters and finding a way to coexist with them.
4. Negima! Magister Negi Magi

The main character, Negi, is a young wizard from Wales searching for his estranged father, Nagi, while teaching at a magical academy. He instructs a class of all-girls and discovers his hidden potential for powerful magic through various encounters.
While his magical capabilities focus on combat, he also learns about the importance of strategies and tactics in battles.
3. Tenchi Muyo! Ryo-Oki

Tenchi Masaki is just an ordinary 17-year-old boy living in a quiet rural area with his father and grandfather. His peaceful life is disrupted when a series of bizarre events introduces him to a host of alien princesses, space police officers, and a wacky scientist who crash into his home.
2. Ranma ½

Ranma ½ is a classic that blends action, martial arts, and romantic comedy. The story revolves around Ranma Saotome, a martial arts student who accidentally falls into a cursed spring, transforming him into a girl whenever he comes into contact with cold water. To revert to his original form, he must use hot water, leading to a comedic and chaotic life full of romantic entanglements.
1. Black Lagoon

Black Lagoon is not entirely a harem story; it focuses on crime syndicates and mercenaries operating in Southeast Asia, with protagonist Rokuro ‘Rock’ Okajima being forced into a mercenary group. Despite this, Black Lagoon possesses many distinct elements of a harem battle manga.
Viewers will feel as if they are watching an action-packed Hollywood film filled with thrilling chases and narrow escapes, while the character dynamics and romantic tensions provide an engaging subplot.
Source: Gamerant