My Bride is a Mermaid

瀬戸の花嫁 (Seto no Hanayome)

7.7(150,532)

MAL Score

Ranked #1620

Popularity #809

Comedy
Romance
Supernatural
Organized Crime
Parody
School

Episodes: 26
Duration: 24 min per ep
Aired: Apr 2, 2007 to Oct 1, 2007
Status: Finished Airing

Synopsis

During summer break, middle schooler Nagasumi Michishio visits the Seto Inland Sea. A swim at Mio Sun Beach turns dangerous when his leg cramps and he begins to drown—until a mermaid appears and pulls him to safety.

That evening, his rescuer introduces herself as Sun Seto, a mermaid tied to a yakuza family. Merfolk law demands severe punishment if a mermaid’s identity is exposed to a human, and Sun’s family offers a single way out: Nagasumi must marry her, or face the wrath of Sun’s father, Gouzaburou, head of the Seto clan. With no real choice, Nagasumi agrees—only to find that keeping their sudden marriage quiet, and surviving Gouzaburou’s hostility and a parade of oddball troublemakers, is its own kind of trial as the pair start to grow closer.

Otaku Consensus

My Bride is a Mermaid endures because Seiji Kishi and Makoto Uezu treat Tahiko Kimura’s manga less like a tidy romcom adaptation and more like a precision-timed barrage of yakuza parody, school chaos, idol rivalry, and chibi overreaction. Critics and rewatchers consistently single out the pacing, dub/Japanese vocal energy, and ensemble escalation as the real engine, while the main dissent is equally consistent: the comedy can become grating when side-character interruptions, especially Maki-style meddling, overpower the flow, and the dialogue-heavy animation is visibly economical.

Why You Should Watch

Watch My Bride is a Mermaid if you want a romcom that behaves like a sketch-comedy machine: fast cuts, absurd hierarchy jokes, violent misunderstandings, idol theatrics, and barely a minute of downtime. It scratches the same itch as School Rumble’s romantic humiliation and Gintama’s parody velocity, but in a compact 26-episode package with a clearer couple at the center. The appeal is not polished visual spectacle; it is timing, escalation, and voice performance, with Sakura Nogawa and Haruko Momoi pulling double duty as both cast members and theme-song performers. If you want supernatural comedy without lore homework, harem-adjacent chaos without heavy melodrama, and a show that many fans describe as funnier on rewatch than on first exposure, this is the lane.

Key Characters

L
Lunar Edomae(VA: Sakura Nogawa)
Lunar is the idol-flavored chaos agent of the main cast, remembered for pushing the show’s school and celebrity parody into louder, more competitive territory.
N
Nagasumi Michishio(VA: Daichuu Mizushima)
Nagasumi works because he is not a cool wish-fulfillment lead but a stress-tested straight man whose reactions become part of the show’s slapstick rhythm.
S
Sun Seto(VA: Haruko Momoi)
Sun anchors the series’ sincerity, giving the loud parody a warm center while still fitting into its rapid-fire comic timing.

What Makes It Stand Out

1
The anime was produced by AIC and Gonzo, a pairing that results in simple, readable character designs and relatively limited dialogue-scene motion, offset by exaggerated reaction cuts and over-emphatic comic posing.
2
Director Seiji Kishi and series composer Makoto Uezu structure the show around escalation rather than slow-burn romance, which is why viewer reviews often warn early droppers to continue until the ensemble rhythm fully forms.
3
Its genre identity is unusually specific: AniList’s highest tags include Parody at 95%, Mermaid at 82%, School at 77%, Gangs at 76%, and Yakuza at 68%, reflecting how the comedy depends on genre collision rather than a single gimmick.
4
The soundtrack is by Yasuharu Takanashi, and the show leans into performance culture through theme songs by Sakura Nogawa, Haruko Momoi, and Asuka Hinoi, matching the series’ idol and parody tags.
5
The reception profile is stronger than its modest premise suggests: it holds a 7.65 MAL score from 150,499 votes, sits at MAL popularity #808, and has 979 AniList favourites, with many fan comments emphasizing repeat rewatch value.

Fun Facts & Trivia

Fun fact 1: My Bride is a Mermaid adapts Tahiko Kimura’s manga and aired as a 26-episode TV series from April 2, 2007 to October 1, 2007.
Fun fact 2: Haruko Momoi voices Sun Seto and also performs the opening theme and the second ending theme, tying the lead heroine directly to the show’s musical identity.
Fun fact 3: Sakura Nogawa voices Lunar Edomae and is also credited for opening theme performance, a fitting overlap for a character associated with the series’ idol energy.
Fun fact 4: Yuuko Kakihara is specifically credited on scripts for episodes 6, 9, and 11, while the overall series composition is handled by Makoto Uezu.
Fun fact 5: The show’s polarized user reactions often focus less on the central romance than on comic tolerance: one negative review singles out Maki as flow-breaking, while multiple perfect-score reviews describe the series as a yearly rewatch comedy.