Tenchi Muyo!

Tenchi Muyo!

天地無用！
1992 -1995 AIC OVA 13 episodes Completed
Comedy Sci-Fi Harem Action
Details & Synopsis
The year is 1992. A six-episode OVA from AIC lands in Japan and begins quietly dismantling the walls between science fiction, comedy, and domestic drama in ways the medium was not quite ready for. By the time Pioneer localized it and VHS tapes started moving through anime clubs in North America, it had already built an underground following through the tape-trading networks that would eventually become fansub culture.

Tenchi Masaki is a perfectly ordinary Japanese teenager living with his grandfather near a Shinto shrine. He is about to have a very bad week. A space pirate named Ryoko, sealed away in a cave beneath the shrine for seven hundred years, gets loose, and within approximately forty-eight hours Tenchi's house is full: Ryoko, who oscillates between destroying things and fixating on Tenchi; Ayeka, a Juraian princess who considers Ryoko her sworn enemy; Sasami, Ayeka's little sister who is considerably more dangerous than she appears; Mihoshi, a Galaxy Police detective of supernatural incompetence; and Washu, the greatest scientific genius in the universe, who will tell you so unprompted.

Also Ryo-Ohki is there. Ryo-Ohki is a cabbit, part cat, part rabbit, part spaceship. She eats carrots.

Produced by AIC and directed by Hiroki Hayashi, Tenchi Muyo! Ryo-Ohki began in September 1992. The original OVA series across its first two installments runs thirteen episodes and tells a story that begins as a harem comedy and gradually reveals itself to be something much stranger and more mythologically dense, a space opera built on top of a domestic sitcom, with royal lineages and ancient wars buried under jokes about hot springs and cooking.

This is where the Western harem genre came from. This is what the anime clubs were trading tapes of before Pioneer showed up with a box set. This is the foundational text.

Thirteen OVA episodes. Watch them in order. Then watch Tenchi Universe if you want the TV series version of the same cast in a different continuity. Come back to the OVA when you're ready to find out what's actually going on.
Alt Title 天地無用！
Studio AIC
Network OVA
Aired 1992 - 1995
Episodes 13
Genre Comedy, Sci-Fi, Harem, Action
Status Completed
Search Go to ep Filters
Arc List (2)
OVA 1 Kagato Arc (6) OVA 2 Tokimi Arc (7)
OVA 1 Kagato Arc 6 eps 6 canon 📷 6
001 Ryoko Resurrected Aired Sep 25, 1992 canon 📷 149 ►
Tenchi Masaki lives a painfully normal life training in kenjutsu at his grandfather's rural Shinto shrine. He completely ignores decades of strict family warnings and accidentally breaks the seal inside a forbidden cavern. The legendary demon space pirate Ryoko awakens from a seven hundred year slumber and immediately blows up the schoolyard in a chaotic display of energy manipulation. Tenchi realizes the hilt of his wooden sword is actually the master key to a dormant interstellar legacy.
Lore Debut: Tenchi Masaki vs. Ryoko (Shrine Seal Awakening)
View all 149 screencaps from this episode →
002 Here Comes Ayeka! Aired Nov 25, 1992 canon 📷 149 ►
The haughty First Princess of Jurai arrives in orbit aboard her massive sentient tree ship Ryu Oh. Ayeka is desperately searching for her missing half brother Yosho but detects the unmistakable energy signature of her sworn pirate nemesis instead. She descends upon the Masaki household with two massive wooden guardian robots and a terrifying superiority complex. Tenchi finds himself caught in the crossfire of a centuries old blood feud that rapidly destroys his backyard.
Lore Debut: Ryoko vs. Princess Aeka (Earth Orbit Ship Duel)
View all 149 screencaps from this episode →
003 Hello Ryo-Ohki! Aired Jan 25, 1993 canon 📷 144 ►
A mysterious egg recovered from the wreckage hatches into the ultimate biological weapon. Ryo Ohki appears as an adorable hybrid between a cat and a rabbit with a bottomless appetite for fresh carrots. Sasami immediately adopts the creature as a harmless pet completely oblivious to its true nature. When a resurrected interstellar bounty hunter tracks Ryoko to Earth the tiny cabbit transforms into a colossal heavily armed crystalline spaceship to defend the Masaki shrine.
Lore · 2 Debut: Yosho (Young Prince) vs. Ryoko (700 Years Ago)
+1
Ryo-Ohki: Cabbit Metamorphosis Washu Lab & Household
View all 144 screencaps from this episode →
004 Mihoshi Falls to the Land of Stars Aired Mar 25, 1993 canon 📷 287 ►
Galaxy Police Detective First Class Mihoshi Kuramitsu spectacularly crashes her state of the art patrol cruiser directly into the local lake. She carries a cheerful oblivious demeanor that perfectly masks her status as a walking statistical anomaly. Her pure unadulterated dumb luck completely disrupts the established tension between the space pirate and the Juraian royalty. The Masaki household officially becomes a magnet for the most chaotic extraterrestrial forces in the universe.
View all 287 screencaps from this episode →
005 Kagato Attacks! Aired May 25, 1993 canon 📷 180 ►
The elegant and terrifying rogue scientist Kagato descends upon Earth with absolute chilling precision. He ruthlessly reclaims Ryoko by exploiting his status as her original creator and master. Tenchi attempts to defend his chaotic new family but is completely overpowered by Kagato's ancient Juraian technology. The dark conqueror kidnaps Ryoko and leaves Tenchi bleeding in the dirt forcing the young boy to unlock the dormant royal bloodline resting inside his veins.
Lore Debut: Tenchi & Ryoko vs. Kagato (Soja Battleship Climax)
View all 180 screencaps from this episode →
006 We Need Tenchi! Aired Sep 25, 1993 canon 📷 178 ►
Tenchi and the remaining extraterrestrial crew launch a desperate rescue mission into orbit to assault Kagato's gargantuan spaceship. Tenchi finally manifests the legendary Light Hawk Wings to match the devastating power of the rogue conqueror. His grandfather Katsuhito sheds his humble disguise and reveals his true identity as the legendary missing swordsman Yosho. The violent cosmic clash permanently shatters the illusion that Tenchi is just a normal high school student.
Lore Tenchi & Ryoko vs. Kagato (Soja Battleship Climax)
View all 178 screencaps from this episode →
OVA 2 Tokimi Arc 7 eps 6 canon 1 good filler 📷 7
007 The Night Before the Carnival Aired Mar 25, 1994 canon 📷 180 ►
The chaotic dust of the Kagato incident settles into a tense but functional rhythm at the rural Okayama shrine. Ryoko and Ayeka shift their interstellar warfare into aggressive domestic competition over Tenchi's daily attention. Sasami completely takes over the household logistics while Mihoshi continues to file hilariously inaccurate police reports. A quiet evening gives the fractured crew a rare moment to breathe before the next wave of cosmic madness arrives.
View all 180 screencaps from this episode →
008 Hello Baby Aired Jun 25, 1994 good-filler 📷 180 ►
Tenchi leaves the estate to run errands and accidentally traps Ryoko and Ayeka in the ultimate domestic nightmare. The two bitter rivals are forced to care for a mysterious wailing infant abandoned on the shrine steps. Their constant bickering is slowly broken down by the sheer exhausting reality of feeding and soothing a helpless child. The fierce space pirate and the haughty princess both reveal hidden layers of fierce maternal warmth they normally keep buried under layers of pride.
View all 180 screencaps from this episode →
009 Sasami and Tsunami Aired Sep 25, 1994 canon 📷 182 ►
The cheerful mask of the youngest Juraian princess slips to reveal a massive spiritual secret. A sudden memory of the brutal assault on Jurai exposes the horrific childhood injuries Sasami suffered during Ryoko's original rampage. She only survived because her fading soul merged directly with Tsunami the most powerful primordial goddess in the universe. The revelation completely recontextualizes her maturity and explains the vast cosmic energy radiating from the cheerful miniature chef.
View all 182 screencaps from this episode →
010 I Love Tenchi Aired Dec 25, 1994 canon 📷 185 ►
A sudden quiet afternoon forces the alien women of the Masaki household to genuinely confront their individual attachments to the young shrine keeper. Ryoko wrestles with the vulnerability of trusting another person after centuries of isolation. Ayeka struggles to reconcile her strict aristocratic duty with her blossoming civilian affections. The fierce competitive screaming matches are temporarily replaced by quiet internal reflections on what it actually means to belong to a family.
View all 185 screencaps from this episode →
011 The Advent of the Goddess Aired Mar 25, 1995 canon 📷 177 ►
The highest level of cosmic architecture finally makes a direct move against Earth. Tokimi the terrifyingly powerful sister goddess to Tsunami dispatches the brilliant and deeply unstable Dr. Clay to capture Washu. The self proclaimed greatest scientific genius in the universe is forced to defend her makeshift Earth laboratory against a rival who knows exactly how to bypass her security. The Masaki shrine goes on high alert as the dimensional barriers begin to crack.
Lore Tenchi Household vs. Zero (Ryoko Copy Replacement)
View all 177 screencaps from this episode →
012 Zero Ryoko Aired Jul 25, 1995 canon 📷 183 ►
Dr. Clay unleashes a flawless artificial duplicate of Ryoko designed to infiltrate the household and violently extract Washu. Zero perfectly mimics the swagger and chaotic energy of the original space pirate but lacks her slowly developed emotional anchor to Tenchi. The clone begins to glitch and hesitate as the overwhelming warmth of the Masaki family contradicts her cold assassination programming. A brutal physical confrontation forces Ryoko to fight a mirrored reflection of her darkest unredeemed self.
Lore Debut: Tenchi Household vs. Zero (Ryoko Copy Replacement)
View all 183 screencaps from this episode →
013 Here Comes Jurai! Aired Sep 25, 1995 canon 📷 220 ►
The supreme Emperor of Jurai touches down on Earth to formally drag his runaway daughters back to the royal palace. Ayeka and Sasami face absolute political pressure to abandon the rural shrine and resume their aristocratic duties. Tenchi must step up and assert his own quiet authority to keep his makeshift family from being torn apart by interstellar bureaucracy. The chaotic crew firmly chooses their found family over their cosmic obligations to secure the legacy of the Masaki household.
Lore Debut: Tenchi Masaki vs. Dr. Clay (Subterranean Lab Siege)
View all 220 screencaps from this episode →
ⓘ Legend
canon Episode adapts events from the source manga.
mixed Adapts source material but adds anime-original scenes.
good-filler Anime-original episode generally well-received by fans.
filler Anime-original episode not based on the source manga.
📷 Number of user-uploaded screencaps available for this episode.
TM

Tenchi Masaki

Reluctant Chosen One / Master Swordsman

A seemingly normal, sweet-natured high schooler who spends his summers helping his grandfather maintain a remote Shinto shrine in Okayama. His peaceful rural life is completely shattered when he accidentally breaks a ancient cavern seal, unleashing a space pirate demon who has been trapped for 700 years. Tenchi is the ultimate blueprint for the grounded, level-headed protagonist who reacts to cosmic alien royalty tearing up his house with exasperated sighing—but beneath his polite exterior lies the dormant, mind-bogglingly powerful bloodline of the Jurai royal family and the ability to manifest legendary Light Hawk Wings.
+4 LORE
Tenchi Masaki vs. Ryoko (Shrine Seal Awakening) OVA 1–13 Master Combat Ledger Tenchi & Ryoko vs. Kagato (Soja Battleship Climax) tenchi-ova-combat-ledger Tenchi Masaki vs. Dr. Clay (Subterranean Lab Siege) tenchi-ova-combat-ledger Tenchi Masaki & The Master Key (Tenchi-Ken) Jurai Empire & Light Wings
RY

Ryoko

Space Pirate / Chaos Manifest

The legendary, green-haired space pirate who spent seven centuries sealed away in the Masaki shrine woods before Tenchi accidentally let her out. Created by the mad scientist Washu, Ryoko is a chaotic force of pure, unfiltered id—capable of flying through the air, phased transparency, creating energy constructs, and summoning synthetic demon beasts. She views Tenchi as her absolute prize and emotional anchor, bringing a violent, high-energy swagger to the household that completely upends the Earth-bound pacing of the early episodes.
+5 LORE
Yosho (Young Prince) vs. Ryoko (700 Years Ago) OVA 1–13 Master Combat Ledger Ryoko vs. Princess Aeka (Earth Orbit Ship Duel) Tenchi-ova-combat-ledger Tenchi Household vs. Zero (Ryoko Copy Replacement) tenchi-ova-combat-ledger Tenchi Masaki vs. Ryoko (Shrine Seal Awakening) OVA 1–13 Master Combat Ledger Tenchi & Ryoko vs. Kagato (Soja Battleship Climax) tenchi-ova-combat-ledger
AY

Ayeka

First Princess of Jurai / Royal Rival

The haughty, hyper-traditional, and deeply elegant First Princess of the planet Jurai. She touches down on Earth inside her sentient, organic wooden battleship, Ryu-Oh, while searching the cosmos for her missing half-brother and fiancé. Ayeka embodies strict, old-world space aristocracy—which means she spends 90% of her time trading elite, passive-aggressive verbal barbs with the "space trash" Ryoko and the other 10% completely flustered by her rapidly developing feelings for Tenchi, turning the Masaki household into a literal interstellar warzone.
SA

Sasami

SPOILER!

Second Princess of Jurai / Household Savior

Ayeka’s sweet, incredibly mature younger sister who tags along on the rescue mission and rapidly becomes the absolute logistical backbone of the Masaki residence. While the older girls are busy blowing up the landscape over Tenchi’s attention, Sasami is the miniature chef keeping everyone alive with gourmet cooking and flawless domestic management. However, the original 13-episode OVA drops a massive cosmic bombshell regarding her backstory: she is spiritually fused with Tsunami, one of the three god-like primordial entities of the universe, making her the most deceptively important royal asset on the planet.
LORE
MK

Mihoshi Kuramitsu

Galaxy Police Detective / Chaos Magnet

A brilliant yet profoundly clumsy Detective Second Class for the Galaxy Police, hailing from one of the most powerful elite families in the universe. Mihoshi is a walking statistical anomaly—she can get lost inside a straight hallway, crash state-of-the-art patrol cruisers by spilling coffee on the console, and misplace vital criminal files, yet her pure, unadulterated dumb luck consistently unravels massive cosmic conspiracies. Her arrival on Earth permanently bridges the gap between Tenchi’s shrine and the interstellar criminal underworld.
LORE
RY

Ryo-Ohki

Cabbit / Living Spaceship

The absolute cutest bio-engineered weapon in science-fiction history. Part cat, part rabbit ("Cabbit"), and entirely obsessed with eating raw carrots, Ryo-Ohki is Ryoko’s fiercely loyal pet companion. Don't let the squeaking and the big eyes fool you, though—she is actually a sentient mass-energy converter capable of transforming into a massive, heavily armed crystalline spaceship that serves as the main transport for the Masaki crew during the violent clashes with Kagato.
LORE
WH

Washu Hakubi

No. 1 Genius Scientist / Creator

The self-proclaimed "No. 1 Genius Scientist in the Universe." In the original 13-episode OVA run, she is revealed to be an ancient, god-like entity (and Ryoko's literal creator) who was trapped inside Kagato’s battleship. Once she breaks free and moves into the Masaki household, she turns the sub-basement into a massive, multi-dimensional laboratory. An archive without Washu is missing the literal mechanical and cosmic brain of the entire franchise.
LORE
KA

Kagato

SPOILER!

Rogue Juraian / Cosmic Antagonist

The dark, elegant, and completely cold cosmic antagonist of the first major OVA arc. A brilliant former student of Washu who stole Juraian technology and possesses a terrifyingly calm, absolute superiority complex. He is the space pirate responsible for ruining Ayeka's life and serves as the ultimate high-stakes catalyst that forces Tenchi to physically manifest the legendary Light Hawk Wings to survive.
+2 LORE
Tenchi & Ryoko vs. Kagato (Soja Battleship Climax) tenchi-ova-combat-ledger Tokimi & The Dark Hermit Kagato Three Goddesses & Cosmos
← All lore

OVA 1–13 Master Combat Ledger

Climactic OVA 1 & OVA 2 Engagements

Yosho (Young Prince) vs. Ryoko (700 Years Ago)

OVA 1 Ep 3 / Backstory · Masaki Shrine Forest · Decisive Yosho Victory

700 years prior to the main story, Kagato used Ryoko to attack the planet Jurai. Prince Yosho pursued Ryoko to Earth in his Royal Tree-Ship.
The Breakdown
Yosho engaged Ryoko in a duel above Earth. Using his Master Key blade, Yosho excised Ryoko's three power gems, sealing her body inside the subterranean cave beneath what would become the Masaki Shrine.
Ryoko

Debut: Ep 003 - Hello Ryo-Ohki!

Tenchi Masaki vs. Ryoko (Shrine Seal Awakening)

OVA 1 Ep 1 · Masaki Shrine Cave & High School · Tenchi Victory

Tenchi snuck into the forbidden shrine cave and accidentally broke the ancestral sword-seal, awakening the space pirate demon Ryoko after 700 years of slumber.
The Breakdown
Ryoko pursued Tenchi to his high school, summoning phantom spirits to terrorize the grounds. Tenchi wielded the ancestral sword Tenchi-Ken, accidentally channeling its energy core to slash Ryoko's aura and force her retreat.
Tenchi Masaki Ryoko

Debut: Ep 001 - Ryoko Resurrected

Ryoko vs. Princess Aeka (Earth Orbit Ship Duel)

OVA 1 Ep 2 · Earth Upper Atmosphere · Mutual Crash Landing

Princess Aeka arrived in her Royal Tree-Ship Ryu-O to arrest the space pirate Ryoko, unleashing Jurain guard pods over the Masaki farm.
The Breakdown
Ryoko boarded Ryo-Ohki in ship mode to dogfight Aeka's Ryu-O. The resulting energy exchange damaged both vessels, causing both Royal Tree-Ships to crash-land into the Masaki hot springs and stranding Aeka on Earth.
Ryoko

Debut: Ep 002 - Here Comes Ayeka!

Tenchi & Ryoko vs. Kagato (Soja Battleship Climax)

SPOILER!

OVA 1 Ep 5–6 · Earth Orbit / Soja Bridge · Decisive Tenchi Victory

The space hermit Kagato invaded Earth aboard his colossal warship Soja, capturing Ryoko and disabling Aeka's forces to seize the Master Key.
The Breakdown
Tenchi infiltrated the Soja with Katsuhito's guidance. When Kagato mortally wounded Tenchi, Tenchi's Jurain royal blood awakened three Light Wave Wings (Lighthawk Wings). Tenchi bisected Kagato and destroyed the Soja, rescuing Washu and Ryoko.
Tenchi Masaki Ryoko Kagato

Debut: Ep 005 - Kagato Attacks!

Tenchi Household vs. Zero (Ryoko Copy Replacement)

SPOILER!

OVA 2 Ep 11–12 · Subterranean Washu Lab · Decisive Washu / Tenchi Victory

The shape-shifting synthetic android Zero was deployed by Dr. Clay to kidnap Washu, impersonating Ryoko to infiltrate the Masaki house.
The Breakdown
Zero captured Ryoko and attempted to absorb Tenchi's power. Washu uncovered the imposter using neural scans, while Tenchi's genuine affection for the real Ryoko broke Zero's emotional programming, allowing Washu to free Ryoko and defeat Dr. Clay.
Ryoko

Debut: Ep 012 - Zero Ryoko

Tenchi Masaki vs. Dr. Clay (Subterranean Lab Siege)

SPOILER!

OVA 2 Ep 13 · Subterranean Washu Core · Decisive Tenchi Victory

Dr. Clay trapped the Masaki family inside Washu's dimensional lab, attempting to escape with a captured Washu clone aboard his warship.
The Breakdown
Tenchi summoned the Tenchi-Ken, tapping into his Jurain royal heritage to generate Light Wave Wings inside the pocket dimension. Slicing through Dr. Clay's mechanical barriers, Tenchi freed Washu and apprehended Clay for the Galaxy Police.
Tenchi Masaki

Debut: Ep 013 - Here Comes Jurai!