15 Best Ecchi Harem Anime Like High School DxD You Need to Watch

Welcome to Animeking, where the waifus are stacked, the plot is thick (sometimes literally), and the harem energy is off the charts.
If you’re here, there’s a 99.9% chance you’ve already sold your soul to the devil for Rias Gremory, blushed at every Akeno screen time, and dreamed of becoming the next Harem King.
But once you finish High School DxD, that dark hole of “what do I watch now?” hits harder than Issei’s Dress Break.

Don’t worry — we got you covered.
We’ve handpicked 15 anime like High School DxD that bring the same chaotic mix of ecchi, action, demon girls, fantasy battles, and enough bouncing “plot” to crash Crunchyroll’s servers.
Whether you’re into monster girls, battle babes, or magic-powered make-out sessions, this list is pure degenerate-certified gold.

Let’s dive into the wild, the absurd, and the horny-with-heart harem worlds that could give even DxD a run for its money.

1. To LOVE-Ru

Ecchi | Harem | Romance | Comedy | Sci-Fi

Ah yes, the OG ecchi harem chaos anime. If High School DxD is a wild demon-slaying ride, To LOVE-Ru is the “oops I slipped and landed on her boobs… again” version of that ride.
Our poor guy Rito just wants to confess to his crush, but an alien princess literally crash-lands into his life — and declares they’re getting married.
Expect zero plot and 100% “plot” — like, this show invented absurd ecchi setups.
Think Issei, but without the dragons or demon power-ups — just endless, escalating girl trouble from space.

😈 DxD similarity: Harem? Check. Accidental pervert MC? Big check. Girls falling from the sky (sometimes literally)? Absolutely.

2. The Testament of Sister New Devil (Shinmai Maou no Testament)

Ecchi | Harem | Action | Supernatural

This one said, “Hey DxD, what if we took your demon girls and dialed the horny to MAX?”
MC Basara’s new stepsisters? One’s a demon lord, and the other’s a succubus. And to form contracts with them (to give them powers), he has to… um… do things. You know. “Ecchi contract things.”
Combat scenes? Pretty lit. But let’s be real — most people come for the cursed Holy Water scenes and magical BDSM bonding rituals.
Basara’s a lot like Issei — he’s got the “I must protect my girls” energy, but with even less shame about how he protects them.

🔥 DxD similarity: Supernatural demons, magic contracts, a pervy-yet-noble MC, and plot devices disguised as… “training scenes.”

3. Sekirei

Ecchi | Harem | Superpower | Action

Imagine DxD meets Pokémon, but instead of catching cute monsters, you bond with gorgeous superpowered waifus who kiss you to activate their powers — yeah, that’s Sekirei.
Minato, the MC, is a timid guy who suddenly gets caught up in a secret war where girls called Sekirei choose partners to fight for supremacy.
He starts off clueless (like Issei), but gradually builds a harem of loyal, overpowered beauties — and they’ll throw hands (and clothes) to protect him.
The fanservice? Delicious. The girls? Stacked. The stakes? Surprisingly serious.

💋 DxD similarity: Magical girls powered by affection? Check. MC who becomes a chick magnet overnight? Check. Battles mixed with bounce? You bet.

4. Trinity Seven

Ecchi | Harem | Magic | Action

What if High School DxD enrolled in a magic school, took some fashion classes, and then said, “Let’s break the harem limit”? That’s Trinity Seven.
Meet Arata Kasuga, your typical chill dude whose life is turned upside down when a magical apocalypse wipes out his town and cousin. But instead of crying about it, Arata ends up enrolling in a magic academy where he’s immediately surrounded by — you guessed it — seven deadly sin-themed bombshells, all with their own magical quirks and assets.
Here’s the fun part: Arata’s not a shy pushover. He’s a smooth-talking, self-aware perv who’s totally cool about being in a harem. Like, if Issei and Jiraiya fused into one dude, you’d get this guy.
The show swings between over-the-top spells, spicy pillow talk, and some genuinely solid magic theory.

🧙‍♂️ DxD Comparison:
If DxD is about devils and dragons, Trinity Seven is its mage academy cousin. Arata is like a version of Issei who already graduated from the “nosebleed over boobs” phase and went straight to “I know what I’m doing” harem master. Magic battles? Check. Girls in lingerie casting fire spells? You bet. And the ecchi scenes? Just as aggressive.

5. Rosario + Vampire

Ecchi | Harem | Supernatural | School

Imagine you’re a normal dude who accidentally gets enrolled in a school full of monsters — like literal vampires, succubi, snow women, and witches — and they’re all… kinda hot. That’s Rosario + Vampire.
Our MC, Tsukune Aono, is painfully average, but his boring life ends when he meets Moka Akashiya, a stunning girl who turns out to be a vampire. Not just any vampire — a dual-personality badass vampire who goes from cute to queen-of-destruction once her rosary comes off.
Soon, Tsukune finds himself with a whole entourage of monster girls who all want a piece of him — and aren’t afraid to fight (or flash) for it.
It’s got slapstick, supernatural brawls, and a ridiculous amount of panty shots per episode ratio.

🧛 DxD Comparison:
Rosario + Vampire is like if DxD took place entirely in Kuoh Academy’s supernatural wing. Moka is basically Rias and Akeno combined, and Tsukune is Issei if you toned down the perv and cranked up the “what the hell is happening to me” vibes. Harem? Check. Transformation scenes? Sexy as hell. Power-ups triggered by emotions (and sometimes clothing removal)? Oh yes.

6. Date A Live

Ecchi | Harem | Romance | Sci-Fi

Now here’s a concept: the world is being wrecked by spirit girls causing dimensional quakes, and the only way to stop them is… to go on dates with them.
Yes, really. MC Shido Itsuka doesn’t fight these powerful, world-ending spirits with swords or spells. Nope — he takes them on romantic outings, flirts, and tries to make them fall for him.
Once the girls fall in love with him? Boom. Spirit powers sealed, apocalypse averted. But of course, the more spirits he dates, the more complicated (and hilarious) his life gets. Think harem-building, but it’s government-mandated.
The girls? All bangers — from the yandere time-bending queen Kurumi, to the shy space loli Yoshino, to the tsundere sword master Tohka.

❤️ DxD Comparison:
Where Issei wants to build a harem for the dream, Shido builds one to save the world. It’s still girls with powers, accidental groping, “training” that looks very unholy, and waifus ready to fight for his attention. Just swap out holy dragons for sci-fi dating sims with military oversight and you’ve got Date A Live.

7. Heaven’s Lost Property (Sora no Otoshimono)

Ecchi | Harem | Comedy | Sci-Fi

What happens when a peaceful pervert wishes for a quiet life… and gets a literal angelic waifu slave from the sky instead? That’s Heaven’s Lost Property.
Tomoki Sakurai, our MC, is a certified man of culture — a deviant genius who dreams of a peaceful world full of panties and nothing else. One day, a mysterious “Angeloid” named Ikaros falls from the sky and starts calling him “Master.” From there, all hell breaks loose.
More Angeloids show up. Some want to destroy him. Others want to love him. But Tomoki just wants to build flying panties and make perverted inventions with a mad-scientist-level imagination.

Yes, this anime has:

• A panty-powered mech
• An actual panty migration scene like birds flying south
• And a surprisingly deep emotional core when it’s not being full-blown hentai-tier comedy.

💦 DxD Comparison:
DxD gave us plot with “plot” — Heaven’s Lost Property gives us “PLOT” with occasional plot. Think of Tomoki as Issei with a higher IQ and zero shame. While Issei wants a harem for noble reasons (kind of), Tomoki is just here for the pure degeneracy. But hey, both still have surprisingly big hearts.

8. Demon King Daimao (Ichiban Ushiro no Daimaou)

Ecchi | Harem | Magic | Fantasy

Imagine getting enrolled into a magic academy, taking a test, and being told: “You’re the future Demon King.”
Yeah. That’s Akuto Sai’s first day.
He just wants to make the world a better place, but his future career path says he’s destined to be anime Satan, so naturally, all the girls start stalking him — some to stop him, some to seduce him, and one or two to possibly kill him in his sleep.
But of course, it wouldn’t be on this list without magic-fueled ecchi madness: clothes-ripping fights, magic gone wrong (or right, depending on your perspective), and tons of accidental boob-grabbing incidents that would make Issei proud.

🔥 DxD Comparison:
Akuto is like a more serious, more dangerous Issei, except instead of working toward being a Harem King, he’s accidentally walking that path thanks to prophecy. Demon powers? Check. Girls falling for him left and right? Check. Sudden transformations that leave people naked? Double check. If you liked DxD’s supernatural academy + “everyone wants the MC” vibe, this is pure win.

9. Hybrid x Heart Magias Academy Ataraxia

Ecchi | Harem | Sci-Fi | Action

Okay, this anime took one look at High School DxD and said:
“Cool… now what if the MC literally powers up girls through ecchi acts?”
Yes. That’s the premise.
The world is under alien threat, and to fight them, girls use special armor powered by magical energy. But they run out of energy quickly — and the only way to recharge? H-Scenes with the MC, Kizuna Hida.
This show is DxD turned up to 11. The fanservice isn’t implied — it’s the core combat mechanic. And they go for it: breast massaging, steamy bed “training,” public flustering, and all the “ahem” sound effects that tell you you’re watching something you definitely shouldn’t play out loud.
And Kizuna? He’s no slouch — he does what needs to be done… for the team, of course. Heroic stuff.

🚨 DxD Comparison:
Remember how Issei gets stronger when Rias flashes him or sits on his lap? Hybrid x Heart said, “Make that the whole show.” Like, the girls level up from literal foreplay. And Kizuna doesn’t even act embarrassed. He leans in. Issei would be jealous. If you liked DxD for the spicy power-ups and supernatural waifus? Bro, this one is practically a lewd JRPG.

10. Monster Musume: Everyday Life with Monster Girls

Ecchi | Harem | Comedy | Fantasy

What if the girls in High School DxD were… monsters? No, like actual monster girls. Snake girls. Bird girls. Spider girls. And they’re all thirsty.
Monster Musume takes the harem formula and says, “Cool, now let’s make every waifu a different species and crank their obsession with the MC to stalker-level thirst.”
Kurusu Kimihito, your everyday human cinnamon roll, ends up becoming the host for a cultural exchange program between humans and monster girls. Which sounds wholesome — until the monster girls all decide they want to marry him.
And legally, they can’t have sex with him… unless he chooses one of them.
So what do they do? Seduce him. Constantly. Every episode.
There’s tail cuddles, reverse mating rituals, and Lamias using their body like a boa constrictor of love. It’s wholesome, absurd, and wildly horny — all at once.

🐍 DxD Comparison:
Issei had Rias and Akeno. Kimihito has a half-dozen genetically diverse apex predators who all want to be his wife.
While DxD blends action with its fanservice, Monster Musume just says, “This is a harem rom-com — now deal with the fact that one of the girls can crush a bus.”
It’s DxD’s lewd energy in full monster girl form — and let’s be real: if you ever wondered “what if Akeno had wings and claws?” this is your show.

11. Maken-Ki!

Ecchi | Harem | Action | Supernatural

Welcome to Yet Another Battle High School, where the uniforms are tight, the bras are fragile, and the fights are… strangely suggestive.
Takeru Ohyama enrolls in a school where students use special items called Makens to fight — but plot twist: it’s co-ed now, and the school is mostly full of ridiculously busty girls who are all connected to his past in somehow lewd ways.
There’s a childhood friend with rage issues, a perverted school nurse, and a sword girl who may or may not want to chop him up or date him.
Every fight ends in a clothes explosion. Every misunderstanding leads to a nosebleed. Every beach episode leads to forbidden angles.

💢 DxD Comparison:
Take DxD’s supernatural battles and harem dynamic, toss out the coherent plot, and turn the fanservice way past 100.
Takeru is like an Issei who wandered into the wrong anime and just decided to roll with it.
The power scaling isn’t as tight as DxD, but you don’t watch Maken-Ki! for that — you watch it for panty-based physics defiance and bouncy chi-based combat.

12. Aesthetica of a Rogue Hero (Hagure Yuusha no Aesthetica)

Ecchi | Harem | Action | Fantasy

This one? Criminally underrated and probably the closest thing to “What if Issei was already max level and had zero shame.”
Akatsuki Ousawa is a beast. He returns from a fantasy world where he straight-up beat the Demon King, but instead of peace, he brings back… the Demon King’s hot daughter (in a bag. Naked).
Then they both enroll in a special school for otherworld-returning heroes. But here’s the thing — Akatsuki isn’t some shy kid. He’s a confident, alpha harem pro, who undoes bras mid-battle and calls it “strategy.”
He’s powerful, smug, and low-key pervy but very capable. He flexes, flirts, and fights like a shonen god.

⚔️ DxD Comparison:
This is like watching a DxD where Issei already unlocked his final form and decided, “Yeah, I’m the Harem King now. Fight me.”
You’ve got battles, over-the-top moves, tsunderes, and magical fanservice duels. And every girl wants to either fight him, kiss him, or both.
It’s a shame this never got a second season, because Akatsuki is what Issei aspires to be — a fully-realized rogue hero who actually pulls.

13. Ikki Tousen

Ecchi | Harem | Action | Fantasy

If High School DxD had less devils and more girls dropkicking each other into explosions — while their clothes rip apart like tissue paper — welcome to Ikki Tousen.
It’s a martial arts harem series where modern high schoolers are possessed by the spirits of ancient Chinese warlords.
Our heroine, Hakufu Sonsaku, is basically a lovable airhead with god-tier fighting instincts… and the durability of a bikini in a hurricane.
Every fight is brutal, wild, and 90% guaranteed to end in wardrobe destruction.
The story is inspired by Romance of the Three Kingdoms, but if you came for deep strategy and lore, you’re lost. This is boobs, brawls, and battle bras.

🥋 DxD Comparison:
While DxD balances its spicy scenes with story arcs and character depth, Ikki Tousen is like:
“Here’s a girl punching someone into a wall while her top flies off in slow motion.”
You still get power scaling, rivalries, and waifu wars — but they’re all fought in thigh-highs and minimal armor. It’s Issei’s wet dream turned into ancient warrior cosplay.

14. Freezing

Ecchi | Harem | Action

Imagine High School DxD…
But instead of devils, it’s genetically enhanced warrior babes fighting off interdimensional monsters — and they need a male partner called a “Limiter” to “freeze” their enemies…
How do they sync?

Through intense physical contact.
Yes. That kind.
The main girl, Satellizer el Bridget, is a cold, traumatized killing machine — but with some tragic backstory that makes her eventual affection for the MC kinda adorable… in between the jiggle physics and combat lingerie.
The fights are bloody, the power moves are flashy, and the clothes? Mostly optional.

🧊 DxD Comparison:
Think Rias and Akeno but with giant swords, PTSD, and mandatory boob grabs for synchronization.
Freezing is darker than DxD but keeps the same ecchi harem sauce — only with a military sci-fi coat of paint. If you like your fanservice mixed with tragic waifus and absurd combat choreography, this is a must.

15. Highschool of the Dead

Ecchi | Harem | Action

Last but definitely not least — the zombie apocalypse hentai simulator that everyone either loves or hates.
The world’s falling apart. Zombies are eating people. Civilization is dying.
And yet… every female character is stacked beyond reason, and the camera? Obsessed with their everything.
Takashi, the MC, goes full survival mode with a ragtag crew of waifus, including a kendo queen, a gun nut, and the obligatory childhood friend.
There’s blood. There’s action. There’s bullet time boob dodging.
Yes — “Matrix-style bouncing breasts dodging bullets” is a real, animated thing here.

☢️ DxD Comparison:
While DxD gives us fantasy battles and waifus, HOTD throws those waifus into a zombie hellscape with no bras and infinite slow motion.
Less plot, more chaos. Less magic, more “hey, why is she doing backflips in a bikini with a sniper rifle?”
Still, the harem vibes, overprotective male lead, and relentless fanservice definitely scratch the same itch.

There you have it, kings —
15 absolute bangers for when High School DxD just isn’t enough to satisfy your inner perv-power fantasy.
Whether it’s panty-powered mech battles, monster girl marriage proposals, or boob-fueled magical transformations, these shows don’t just flirt with the line between fanservice and full-blown chaos — they cross it, dance on it, and throw a beach episode right on top.

So go ahead.
Fire up that watchlist, grab your headphones (for… reasons), and prepare to fall into the wonderfully unhinged world of ecchi harems done right.

And if you loved this guide, bookmark Animeking for more wild recommendations, waifu debates, anime rankings, and way too much love for lewd but legendary titles.
We don’t judge. In fact, we’re right there with you.

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