Trinity Seven

One day, the bright red sun stopped shining, causing the "Breakdown Phenomenon"—the destruction of Arata Kasuga's town and the disappearance of the people inhabiting it. All, however, is not yet lost; by utilizing the magical grimoire given to him by his childhood friend and cousin Hijiri Kasuga, Arata's world gets artificially reconstructed.

In order to investigate the phenomenon, Lilith Asami appears before Arata, whose artificial world suddenly disintegrates. He is given two choices: hand over the book, or die. However, Arata chooses the third option—enrolling in the top-secret magic school Royal Biblia Academy, where six other magical users await him. Together with Lilith, these six form the Trinity Seven, the elite of the school who each bolster their own power and skill.

With the ambition to save Hijiri and the help of his newfound friends, Arata stops at nothing to prevent the destruction of his beloved hometown and to bring his best friend back.

[Written by MAL Rewrite]

Kasuga, Arata Main

Matsuoka, Yoshitsugu Japanese

Kazama, Levi Main

Sakura, Ayane Japanese

Asami, Lilith Main

Hara, Yumi Japanese

Sherlock, Lieselotte Main

Touyama, Nao Japanese

Kurata, Yui Main

Murakawa, Rie Japanese

Kannazuki, Arin Main

Uchida, Aya Japanese

Yamana, Mira Main

Hikasa, Youko Japanese

Fudou, Akio Main

Yuzuki, Ryouka Japanese

Sora Supporting

Kugimiya, Rie Japanese

Biblia Gakuenchou Supporting

Miki, Shinichiro Japanese

Naya, Ryousuke Producer, Planning

Beniya, Yoshikazu Producer

Takashino, Shuuichi Producer

Yasumura, Ryou Producer

Reviews

Nov 30, 2025

GrimmTales

Recommended

If you've seen a harem , a magical academy comedy, then you've seen this.
The writing is average.
Color palette average.
Animation is average
Characters , save a couple , pretty average.

The soundtrack for this show ?
Absolutely top notch.
This show is the only other besides ( "The Asterisk War" "waiting for the rain" by Sakamoto Maaya ending theme season 1) that i immediately looked up the music to save for later.
I still listen to that song till this day, absolute banger.
... Watch this for its soundtrack , seriously.

Else-wise?
Eh, nothing really
Greatest offense is what this show could've been.
That has been done better elsewhere.

Reviewer’s Rating: 5

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Sep 11, 2022

Wrathful_Chicken

Mixed Feelings

One of the Harem titans of the old era. The 7 in Trinity Seven means the seven harem girls which glomp on the MC. The main reason you'd want to watch it is general attitude of the characters that are clearly aware that this is a harem anime. The male MC, Kasuga Arata, and many of the female ones being very upfront with sexual attraction. In fact this show is so clearly aware of its harem status, that within the first 30 seconds beyond the intro, our MC is literally groping boobs already.

When I say old era of harem, I mean the era where harem ... was all show-as-much-skin-as-possible, but not yet at the stage of doing extremely sexually suggestive actions. The farthest the MC goes being the classic slip-and-grope and flashing nudity. Nipples don't exist here though. Trinity Seven first and foremost is a harem anime and any motivation for watching it should start with that.

As for the underlying element of a plot beyond 'plot,' Trinity Seven takes on an apocalyptic Date a Live vibes with a magic academy focus. The motivations are extremely clear, but the plot progression is not at all. It leads to a very strange dilemma where Arata has a very clear objective in mind, but the story seems to stumble into random plot points instead of a clear path of progress towards his objective. A large part of it being because the concept of seven female MCs means that they must all be accounted for quickly. As such, you can summarize the plot as being rushed, and being a 12 episode anime most certainly doesn't help.

The single biggest sacrifice to this rushing is the magic system. It is not explained, nor fleshed out well at all. Being the very fundamental action element of this anime, you'd think that it would be simple and clear. Yet it pans out as a complicated system that has processes which are literally skipped over, all because Arata is an overpowered MC. It makes any form of combat in this anime a complete joke since it ends up being a bunch of random superpowers that manifest out of nowhere.

That being said though, can't go ranting on how shitty the action is without talking about the most important aspect of the show: tiddies ( ͡° ͜ʖ ͡°). The fanservice on this show is on a different wavelength. While it doesn't reach the levels of degeneracy as the notorious To Love-Ru and Shinmai Maou no Testament, and definitely not at the levels of borderline hentai from Ishuzoku Reviewers and Isekai Meikyuu de Harem wo, the aforementioned attitude really switches up the reaction dynamic. While there most certainly is the classic "KYAAA-" *shoot male-MC with a rocket launcher* kind of reaction (practically the identity of Asami Lilith), there is also the reactions that go along the lines of: "ooh~ you like that ( >w*)", "damn right, I do." That kind of upfront and honest degeneracy won't be seen in any other harems. The only one that comes remotely close is Highschool DxD, when Issei makes heroic speeches. Yet this goes through that has the confidence to go even farther beyond.

As far as characters go, half the cast are cliches while the other half has a bit of roundness. Though, some of the cliches make up for it with another kind of "roundness."
( ͡° ͜ʖ ͡°)
They are all pretty slim, so no big-booty-bitches here. Lieselotte Sherlock is a bit thicker than the rest of the cast, but not dummy THICC like you see in characters like Akeno from Highschool DxD. Then there are some characters have cliched themes, but a distinct personality. For example, Kazama Levi definitely has the ninja theme, but here sexual honesty is very distinct as a personality in spite of some kunoichi being known for sexual assassination.

Arata, our determined male MC, is a proud degenerate who has a strong sibling bond which serves as the primary purpose of his every action. His love for his cousin, Hijiri, is so great that he accepted his fate as a potential Demon Lord to save his cousin. His trust in Hijiri is so strong that he is willing to overlook at all the transgressions of things related to her, in absolute faith that she is acting with good intent. That fierce determination to find and save his cousin is very clear and easy to get behind, which is sorely lacking in many harem anime. It's one of the great positives of this show that makes it stand out in comparison to other harem anime. Many times, harem animes tend to have aimless male MCs who get strung all over the place without any real purpose. Arata has a very clear purpose and a very good reason for why he wants to take risks to achieve it. Familial bond is a simple, but extremely effective way to express motivation. Starting right out the gate with it makes Arata a very good character.

The Trinity Seven are a conglomerate of quirky magic students. Lilith is the commando tsundere. Levi is the shameless kunoichi. Yui is the childish sleeping beauty. Arin is the kuudere cultist. Akio is the confident delinquent-senpai. Mira is the crusader tsundere. Finally, Lieselotte is the seductive witch. The school is lead by a degenerate overpowered headmaster and the bulk of the show involves their interactions. Which makes sense since that's also their opportunity for fanservice.

Lilith carries that common beat the crap out of a guy for being silly that you see from characters like Tachibana Misato from Nichijou or Chidori Kaname from Full Metal Panic, the guns blazing variant. She's supposed to be a teacher, who is about the same age as Arata, but she ends up being a sexy body joke from being teased by the rest of the cast. She is one of the voices of reason in the stream of ecchi personalities clashing about. Her character ultimately amounts to being a tour guide for Arata with a splash of ecchi jokes getting forced onto her. Ends up feeling very tropey, leaning heavily on the guns blazing punishment for Arata.

Levi is a kunoichi, which you don't really see that often as a character in general unless it is an explicitly ninja focused anime. As such she makes a lot of ecchi jokes while doing ninja stuff and fighting using the ninja way. She likes to pop out of the roof to join in on conversations and is usually the kicker for Arata's degenerate honesty. While her role is quite simple, she actively dives into one of the main motivations to watch the show, which is that unabashed self-awareness of being a harem anime.

Yui is a sleeper OP character who uses dreams for magic and support. She's stuck with a childish mentality since she was secluded for a long time and only had an opportunity to wake up when Arata came along. She instantly glomped onto our male MC as soon as she woke up and is also another contributor to the ecchi talks since she has no hesitation to get down and dirty with Arata after his intervention.

Arin is a silly kuudere who tries her darn best to act on tropes, but flops due to her emotionless reactions. She instantly glomps onto Arata for a seemingly random reason of being destined to be the Demon Lord's waifu. She draws many parallels from Tobiichi Origami from Date a Live for this reason, with the exclusion of the fierce vengeance factor Origami has. Also flies into ecchi talks with Arata in the same way as Origami. At odds with her feelings with witnessing the degeneracy Arata falls into while being his self proclaimed wife.

Akio walks like a delinquent and clobbers fools like a delinquent, but doesn't have that ferociously aggressive attitude of one. Akio is rather lax and instead exudes confidence and care. Doesn't contribute much to the ecchi talks, but she doesn't really care when she gets stripped naked which adds to her confidence. Force of will is her magic and she's a devout believer in the power of friendship. Lots of good vibes all around.

Mira is the disciplinary council president kind of tsundere. For the most part, has a lot of aggression toward Arata due to his Demon Lord potential being a threat. Mira tries to be the mature stoic disciplinarian. Yet when exposed to her childlike choices from the inevitable fanservice, that side of her breaks down completely and she devolves into an embarrassed brat. She's the last one to glomp onto Arata due to her wariness of his overpowered Demon Lord magic.

Lieselotte is a sexy bad girl who is mostly debuted by her twin sister, Selina, the newspaper reporter. Being the bigger boob variant and the only character to actively try to charm enemies, she has the most dynamic fanservice and tries to be a sexy little devil to mask her abandonment insecurities. Gets intimidated very easily. Aggressively glomps on Arata for his Demon Lord power at first. Lovingly glomps on him later for his determination to save her from the dark side.

All in all, about what I expected from a harem anime. When you look at it as a harem anime, it has distinctly good story points going for it in the form of self awareness and clear motivations. Though if you look at it as a fantasy action anime, it's got a lot of problems explaining its magic system and rushing through without properly carrying forward progress for our male MCs motivations. In the fanservice department, they do a good job of showing off all the girl's figures and even the Arata's at times. Though it stops at full nudity with things like light beam censoring and small patches of clothes, it is appropriate for that harem era and shows off their curves particularly well--especially Lieselotte's scenes.

Reviewer’s Rating: 6

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Oct 16, 2025

Tharr

Not Recommended

I had this one as "completed" but I couldn't remember anything about it so I rewatched it. Bad move. I don't know why the high ratings....
This won't be an usual review, because I don't wanna waste my time on this one even more. More so because its an old anime and people will not check reviews...
So. visuals are sht. Designs men, bad colour palette, bad vfx, bad animation. Lousy cinematography, maybe only a handful of decent shots. Really bad fight choreography. The so-called ecchi aspect is useless.
Audio. Meh or boring VAs (lots of over-the-top acting). The OP and ED are meh or sht. The mixing ... was meh, again.
World-building is sht. Mostly is based on "oh, you don't know even that? Lets expo dump again". Plus, it feels like new pieces of information are dropped only when needed to push the "story". The pacing is weird, mostly fast stuff happening. I don't know if its because of them trying to get all the source material crammed in a season, but also: I don't care. The production value is meh, even with the top-tier actors.

The "good" stuff. The story is sht. Full of plot contrivances and plot devices. Most of the stuff "just so happens". Horrible dialogue. Coupled with the fast pace, the sht world-building and the sht magic system (oh right, forgot about that), its a big mess. Yes, sht magic system, new info keeps appearing. New spells, new tiers... And then its the mythic aspect. The seven deadly sins, norse mythology, paladins.... Lots of terms, ranks, spells inspired by those facts. I'm assuming those names and the "ecchi" parts were the main factors for the high reviews. Or maybe the comedy? But speaking of ecchi: light shafts, steam, shredded cloth... the whole anime is censored. And no, there is no "later, uncensored bluray" version. Yes, I checked, it felt too intentional with their censoring. That means, there was never in plans to have a "good" version, the ecchi part is just a marketing trick.
Do you wanna talk about character development, or the shitty so-called "harem", or romance? Yeah, don't bother.

In other words, this anime is sht. Can you find a couple of enjoyable moments? Sure, but thats exactly the point: a couple. The comedic aspect works mainly because of the actors. Nothing else will make you wanna watch it. 11 years later, there's no sequel so the story is unfinished, unless you really want to read the source. So, don't bother.
It gets a rating of 4 for the very few good parts. Not recommended, obviously.
Have a lovely day.

Reviewer’s Rating: 4

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