Lu Over the Wall

Movie review by
Sandie Angulo Chen, Common Sense Media
Lu Over the Wall Movie Poster Image
Imaginative animated mermaid adventure has a few scares.
  • PG
  • 2018
  • 112 minutes

Parents say

age 8+
Based on 3 reviews

Kids say

age 10+
Based on 5 reviews

Did this review miss something on diversity?

Research shows a connection between kids' healthy self-esteem and positive, diverse representations in books, TV shows, and movies. Want to help us help them? Suggest a diversity update

We think this movie stands out for:

A lot or a little?

The parents' guide to what's in this movie.

Educational Value

Viewers will learn about mermaid folklore, the importance of the fishing industry to the Japanese, and the power of teamwork, friendship, and looking beyond stereotypes.

Positive Messages

Encourages friendship and looking past differences to the similarities that draw us together. Also celebrates a love of music and dancing.

Positive Role Models & Representations

Kai, Kunio, and Yuho are all good friends to one another and help Lu when she's being scapegoated. Lu is open and kind to everyone; she just wants to be friends. The kids are courageous and stand up for their merfolk friends.

Violence & Scariness

Kai can't swim and looks like he's struggling in the water until Lu breathes air into his lungs. The merfolk scare the villagers but aren't actually dangerous. Curse of the shadow stone unleashes an angry fire creature that burns down a tent and tumbles onto the village, burning things in its wake. An older character has a spear, throws it into the water to hurt a mermaid (but misses). A few powerful villagers keep Lu imprisoned, threaten her with sunshine (fatal to mermaids). The curse forces the water to rise, and the merfolk have to rescue the villagers and lead them to higher ground.

Sexy Stuff

Flirting (a young man tells Yuho to friend him on social media). One scene in which a couple in the park kisses, and Lu wants to know how/why people kiss. Later she kisses and hugs her friends, but it's not sexual, just friendly. Kunio obviously has a crush on Yuho, while Yuho seems to have a crush on Kai. Some blushing.


"Holy mackerel," and a few yells of "we know you eat people" and "why is this monster still alive?"

Drinking, Drugs & Smoking

What parents need to know

Parents need to know that Lu Over the Wall is a Japanese-language, English-dubbed anime drama about three middle schoolers whose pop band attracts the attention and friendship of a mermaid whose tail separates into legs as she dances to the music. The tween-friendly adventure is reminiscent of Studio Ghibli films, right down to the mermaid-friendship theme, which recalls Ponyo. Expect some scenes of violence/scariness when villagers kidnap and threaten to hurt/kill the merfolk, and a creature burns down a tent and frightens people. People seem to struggle in the water, but merfolk save them. Merfolk nearly die when lights/sunshine hit them. There's also a bit of flirting and kissing. Families can discuss the importance of friendship and seeing past differences and stereotypes.

User Reviews

  • Parents say
  • Kids say
Adult Written bytitedog March 22, 2020

Lu Over The Wall

I have mixed emotions over this film.

First off, I gave this a 5 star rating because personally, I am really into it. I think people expected this to be differ... Continue reading
Adult Written bynduns February 10, 2019

I don't care what anyone says. I strangely adored this film

Now, I have noticed that of all the big anime films that hit North America last year, this one was one of the most poorly received. And after seeing this, I ki... Continue reading
Kid, 9 years old June 27, 2020

They best movie EVER!

This movie is amazing!I fell in love with it!Im 9 years old and i seemed to be okay with this movie.There are a couple scary seens and there is a part when an m... Continue reading
Kid, 11 years old June 15, 2020

This movie is bizarre, but not in a bad way.

I found this movie on Netflix and me and my mom decided to watch it because we liked the trailer and we both are fans of anime. The first 15 minutes or so we... Continue reading

What's the story?

LU OVER THE WALL is an animated Japanese fantasy (which can be watched either with subtitles or dubbed in English) about teens from a fishing village who befriend a mermaid. Kai Ashimoto (voiced by Michael Sinterniklaas) is a quiet, introverted young musician who used to live in Tokyo but now has moved back to his family's small village with his divorced father. Two classmates, Yuho (Stephanie Sheh) and Kunio (Brandon Engman), invite Kai to join their pop-rock band, Siren. When the trio practices on secluded Merfolk Island, they're surprised to encounter an adorable mermaid named Lu (Christine Marie Cabanos), whose fins turn into feet when music is played. And when Lu sings, humans can't stop dancing. Kai grows closer to Lu, telling her what he hasn't been able to say to anyone. But when the band plays at a local event, and the villagers see Lu, her presence delights some and frightens others, who believe the area folktales about merfolk bringing danger, disaster, and even death to the town.

Is it any good?

This quirky spin on classic folktales follows an introverted teen musician's growing, platonic bond with a sweet, music-loving mermaid. Vibrantly colored and imaginative, Lu Over the Wall is sure to charm any moviegoer who enjoys Japanese anime or mermaid stories. Some characters lack depth (several of the supporting roles are aren't very well-rounded), but the movie is still simultaneously humorous and substantive. It isn't the kind of anime drama that will evoke a deep outpouring of feelings, like many of Studio Ghibli's best offerings, but it's compelling to see how the villagers handle Lu's presence -- and how easily they turn on the merfolk once the merfolk stop being perceived as a tourism opportunity and start to feel dangerous.

The voice acting is well done, but there are a couple of times when Lu's high-pitched, squealy voice might be difficult to decipher in the dubbed version. Luckily, she doesn't say much that isn't monosyllabic or repeated many times ("friends, friends" or "like, like" or "happy, happy"), so it's not difficult to pick up what she says on the second or third try. Kai's angst (and cluelessness about Yuho's crush on him) can get a bit grating by the third act, but Kunio is a breath of fresh air as the comic-relief friend (who's head over heels for the beautiful Yuho). The action sequences are impressive, especially when the merfolk band together to save the villagers from rising waters. Parents with tweens and teens who enjoy foreign animation will surely want to add this to their family movie night rotation.

Talk to your kids about ...

  • Families can talk about the folklore in Lu Over the Wall. How do legends about the merfolk affect the villagers' feelings about mermaids? Do you think those feelings are valid?

  • Do you consider any of the characters role models? What character strengths do they personify? Why is teamwork important to the story?

  • Were any parts of the movie scary to you? Why? How much scary stuff can young kids handle?

  • Discuss anime films. How are they similar to each other, and how are they different from most American-made animated movies?

Movie details

Our editors recommend

For kids who love quirky animated movies

Character Strengths

Find more movies that help kids build character.

Themes & Topics

Browse titles with similar subject matter.

Common Sense Media's unbiased ratings are created by expert reviewers and aren't influenced by the product's creators or by any of our funders, affiliates, or partners.

See how we rate

Streaming options powered by JustWatch

About these links

Common Sense Media, a nonprofit organization, earns a small affiliate fee from Amazon or iTunes when you use our links to make a purchase. Thank you for your support.

Read more

Our ratings are based on child development best practices. We display the minimum age for which content is developmentally appropriate. The star rating reflects overall quality.

Learn how we rate