Lu Over the Wall

夜明け告げるルーのうた (Yoake Tsugeru Lu no Uta)

6.7(1)

Otaku Den

7.4(21,771)

MAL Score

Ranked #2740

Popularity #3346

Adventure
Award Winning
Supernatural
Music

Episodes: 1
Duration: 1 hr 51 min
Aired: May 19, 2017
Status: Finished Airing

Synopsis

In the coastal village of Hinashi Town, stories about mermaids near Merfolk Island are treated as grim warnings—especially by Kai Ashimoto’s grandfather, who insists the creatures prey on humans. The Ashimoto household keeps music at arm’s length for similar reasons, leaving Kai to quietly channel his feelings into looped tracks he builds on his laptop and posts online.

Kai’s uploads catch the attention of upbeat classmates Kunio and Yuuho Ebina, who invite the withdrawn boy to join their rock band. Though reluctant, he agrees to accompany them to a practice session on Merfolk Island, where he encounters something beyond explanation. Later, while composing in his room, Kai draws the attention of Lu, a mermaid who responds joyfully to his stereo—revealing surprising abilities tied to music, including controlling water and forming legs when sound fills the air. As their friendship grows, Kai and Lu begin to open up, challenging the fear and boundaries that have long kept Hinashi Town from finding a more harmonious understanding.

Otaku Consensus

Lu Over the Wall earns its reputation on Masaaki Yuasa’s direction: Science SARU turns musical release, water movement, and comedy into one continuous elastic performance, making the film’s song-driven pacing feel more alive than most theatrical anime. The common complaint is real — the family-film story beats are easy to predict and can be more exciting to watch than to follow — but critics and fans consistently frame its visual invention, warmth, and kinetic soundtrack as the reason it outplays its modest MAL visibility.

Why You Should Watch

Watch Lu Over the Wall if you want the oceanic joy of Ponyo filtered through Masaaki Yuasa’s rubber-limbed, music-video instincts rather than Ghibli’s soft pastoral polish. It is especially rewarding for viewers who like anime films where animation is not just decoration: bodies stretch, crowds move like choreography, and water behaves like a character whenever the soundtrack takes over. If The Night Is Short, Walk on Girl sells you on Yuasa’s party-energy surrealism, this is its more family-facing cousin: less cynical, more openly sentimental, but still unmistakably strange. It also works as a palate cleanser after heavier coming-of-age films such as A Silent Voice or In This Corner of the World, offering emotional release without flattening its adolescent loneliness into simple cheer.

Key Characters

K
Kai Ashimoto(VA: Shouta Shimoda)
Kai is memorable less as a stock withdrawn teen than as a laptop-era musician whose guarded personality gives the film’s explosive musical scenes something emotionally specific to push against.
L
Lu(VA: Kanon Tani)
Lu functions like a pure Yuasa animation catalyst: fans tend to remember her through motion, rhythm, and comic timing as much as through dialogue.

What Makes It Stand Out

1
Science SARU’s animation rejects clean model-sheet consistency in favor of elastic silhouettes, squash-and-stretch comedy, and fluid transformations that make the musical numbers feel hand-performed rather than mechanically polished.
2
The film is built as a single theatrical feature, not a television arc compressed into movie form; its 2017 release plays as a concentrated burst of Yuasa’s post-Ping Pong creative phase at Science SARU.
3
Music is treated as a formal engine instead of background mood: reviewers repeatedly singled out the energetic soundtrack because the film’s comedy, movement, and supernatural spectacle are timed around sound cues.
4
Its reception is split in a revealing way: family viewers and Yuasa fans often praise its warmth and accessibility, while more story-focused critics point to a familiar, easy-to-anticipate narrative shape.
5
The film’s critical identity is often described as a collision between Yuasa’s anarchic visual language and Miyazaki-like comfort, which explains why it can feel both aggressively funky and unusually sweet.

Fun Facts & Trivia

Fun fact 1: Lu Over the Wall was produced by Science SARU and released in Japan on May 19, 2017 as a standalone anime film rather than an episodic series.
Fun fact 2: The film screened in the Annecy Animation Festival orbit and is widely associated with its international festival success, including the Annecy Cristal for a feature film.
Fun fact 3: Among Yuasa followers, it is frequently labeled underwatched compared with louder Science SARU-era titles such as Devilman Crybaby, despite its award recognition and strong festival-friendly craft.
Fun fact 4: Its MAL footprint reflects that under-the-radar status: a 7.4 score from 21,694 votes, rank #2671, and popularity #3324 place it below many less formally adventurous anime films.
Fun fact 5: User reception clusters around two poles: viewers praising it as underrated, exuberant, and visually free, and mixed reviewers who still concede that children and family audiences are likely to connect strongly with its color, music, and comedy.