Best Harem Anime Ever

Best Harem Anime Ever


Protagonists with various romance routes and vague romantic labels have always been a popular trope in fiction. Anime, however, ups the ante with its harem genre. This sitcom formula has withstood the test of time, and viewers can now consume a plethora of harem anime in case they want to see some hyperbolic gender dynamics and exaggerated attraction.

Some of the shows in this theme or genre can be rather “daring” or, worse, a crass representation of harem. However, there is also nothing wrong with an anime that aims to deliver more mature content, as long as it is handled well. If you are looking to start your journey, you should check out these upcoming shows since they are the best harem anime on the market. They cover everything, from dramas to parodies and action shonen.

Updated December 4, 2025 by Mark Sammut: 2026 is right around the corner, and it will surely be backed with glorious harems. Until January rolls around, you can always check out some shows you might have initially missed or forgotten about. In fact, the two latest entries (The Testament of Sister New Devil and In Another World With My Smartphone) were the latter for me.

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Trapped in a Dating Sim: The World of Otome Games is Tough for Mobs

MyAnimeList: 7.32

Plenty of isekai anime lean into harem territory, but they do not always bring out the best in each other. These stories have a habit of emphasizing the most generic traits of both themes, resulting in forgettable slogs like In Another World With My Smartphone or The Fruit of Evolution. That said, exceptions exist that not only do justice to both isekai and harem conventions but also heighten their strengths. A few comedy series even manage to parody both genres quite well.

best isekai harem anime arifureta how to not summon a demon lord and in another world with my smartphone

The Best Isekai Harem Anime, Ranked

While not part of every series, many isekai anime feature harems. Here are the best isekai harem shows.

While The Eminence in Shadow is arguably the most popular example and has a huge roster of female characters, Cid (the male protagonist) is so far removed from a traditional harem lead that he disqualifies the show from a recommendation. Fortunately, Trapped in a Dating Sim qualifies as a harem anime that confidently pokes fun at the theme’s tropes, along with isekai and otome games.

At the behest of his sister, a guy is forced to complete a dating sim he hates. Once done, he quickly dies and reincarnates as a bit-part player in the same universe he detests. Armed with the required knowledge to live a cozy life, Leon sets out to play the game while also keeping out of trouble. That does not happen, and he soon finds himself attracting unwanted attention, including landing in the middle of a harem featuring the game’s heroine and villainess (who develop a surprisingly cute relationship).

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The Testament of Sister New Devil

MyAnimeList: 6.68

Generally, I try to avoid directly comparing an anime (or anything, really) to something else, as I prefer to examine how things stand on their own rather than if they can hold up to a genre or medium’s masterpieces. However, while rewatching The Testament of Sister New Devil, I just could not shake the feeling that this is just a worse version of High School DxD​​​​​​. The characters have similar designs, and both anime blend fanservice, battle shonen action, and hints of romance. The male lead is not a pushover in either case, and they unlock a strange power while becoming the center of attention for a group of girls who gradually grow to love him. The main female characters are both redheads, too. Both series lean heavily into ecchi content, and they are fairly risqué compared to other harem anime.

While High School DxD is a great harem and a decent action anime, The Testament of Sister New Devil is a decent harem and a pretty poor action anime. So, this anime is only worth watching if you are specifically craving a show that does not hold back on fanservice, as that is where The Testament of Sister New Devil earns all its value. The characters aren’t exactly terrible, but they are one-note and a bit too conventional (Basara, the male MC, is just a bit too cool).

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Arifureta: From Commonplace to World’s Strongest

MyAnimeList: 6.72 (Season 1)

Shows only get one chance to make a first impression, and Arifureta struggled to hit the mark. While the light novel and manga are well-regarded, the anime notoriously stumbled during its first season, rushing through the story while delivering fairly substandard animation. The sequel seasons somewhat succeeded in steadying the ship, but the adaptation has yet to come close to matching the source material’s quality. Still, when viewed in a vacuum, Arifureta is a passable isekai power fantasy.



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