Ocean Waves(1993): Characters, Voice Actors, Analysis & Character Map
Ocean Waves(Studio Ghibli Official) is an incredibly unique, grounded slice-of-life animated film that originally aired as a 90-minute television special on the Nippon TV network on May 5, 1993.
Today, we are going to deeply analyze the characters and voice actors who brought the sun-drenched, melancholic world of Ocean Waves to life. Beneath the quiet, everyday high school drama, what kind of fascinating psychological struggles are these teenagers actually hiding?
Please be warned: this deep-dive character guide contains major spoilers for the entire film.
*This is a translated version. The original (Japanese) is available here.
Let an AI walk you through the highlights of this post in a simple, conversational style.
Ocean Waves (1993) Main Characters & Voice Actors List
| Name | Age | Voice Actor (Japanese dub) |
|---|---|---|
 Taku Morisaki | 2nd year high school to 1st year university | Nobuo Tobita |
 Rikako Muto | 2nd year high school to 1st year university | Yōko Sakamoto |
 Yutaka Matsuno | 2nd year high school to 1st year university | Toshihiko Seki |
 Yumi Kohama | 2nd year high school to 1st year university | Kae Araki |
 Tadashi Yamao | 2nd year high school to 1st year university | Hikaru Midorikawa |
 Akiko Shimizu | 2nd year high school to 1st year university | Yuri Amano |
Ocean Waves (1993) Character Map
Ocean Waves (1993) Deep Character Profiles and Analysis
Taku Morisaki | Voiced by: Nobuo Tobita
The Unreliable Narrator
The primary protagonist of the story. Currently a first-year university student living in Tokyo, the entire narrative of Ocean Waves is framed as Taku’s extended flashback as he flies home to Kochi to attend his high school reunion.
Because the entire film is essentially a memory, it operates strictly from “Taku Morisaki’s perspective.” Every piece of internal monologue and voiceover narration we hear is generated by him.
Consequently, the story is incredibly subjective. It lacks any true objective reality; everything we see is filtered through “what Taku Morisaki saw,” “what Taku Morisaki experienced,” and “what Taku Morisaki felt.” Therefore, the other characters are presented only as surface-level reflections of his own biases. Half the fun of watching Ocean Waves is actively trying to imagine the inner emotional worlds of the other characters that Taku is completely blind to.
However… it would be a massive mistake to assume his internal monologues represent the “truth.”
This touches on a universal human experience. Think back to your own teenage years. When you were standing in front of someone you had a massive crush on, did your internal monologue ever honestly admit, “I am totally, helplessly in love with you”? For most stubborn teenagers, the answer is no. You aggressively suppressed those feelings, hiding them behind a wall of denial, even when no one else was listening to your thoughts.
Taku pulls this exact same psychological trick throughout Ocean Waves; he cunningly conceals his true feelings from himself. And it only becomes painfully clear during the film’s climax that his entire narration has been an elaborate coping mechanism.
While his self-deception eventually becomes obvious to the audience, unpacking these subtle, messy “complexities of youth” is the absolute best way to enjoy Ocean Waves.
I wrote a massive deep dive on this specific psychological phenomenon. Please check it out below:
Read the full analysis: Ocean Waves: A Masterclass in Self-Deception
About the Voice Actor, Nobuo Tobita
Taku Morisaki is voiced by the legendary Nobuo Tobita. He boasts a massive resume across the anime industry, but mecha fans will instantly recognize him as the iconic voice of Kamille Bidan from Mobile Suit Zeta Gundam. Once you realize it’s Kamille, you can’t unhear it!
Even more surprisingly, Mr. Tobita also provides the voice for Maruo in the beloved classic Chibi Maruko-chan. Knowing his range makes his grounded, subtle performance as Taku even more impressive.
Rikako Muto | Voiced by: Yōko Sakamoto
The Disruptive Force of Tokyo
The co-protagonist of the story. Like Taku, she is currently a first-year university student.
The entire plot ignites when Rikako, a sophisticated Tokyo native, is forced to transfer to a sleepy, rural high school in Kochi. She arrives like a hurricane, unleashing a powerful “Tokyo-style blast” that completely upends the social ecosystem. More specifically, the two local boys caught in her emotional blast radius—Taku and Matsuno—are completely knocked off their feet.
If this story had actually been set in Tokyo, it likely would have dissolved into a standard trendy drama like Tokyo Love Story, concluding with a cheesy monologue like “Rikako Muto embodied the spirit of Tokyo to me.” But because it is anchored in the isolating, provincial setting of Kochi, and because the characters are immature high schoolers, the romance is vastly messier and more compelling.
In my highly personal opinion, this grounded, unglamorous realism makes Ocean Waves an infinitely more interesting coming-of-age story than typical prime-time dramas. (Though I am completely open to debate on that!).
Of course, Rikako isn’t just a manic pixie dream girl designed to inflict trauma on the male leads; she undergoes massive, genuine character growth. By being violently ripped from her Tokyo bubble and forced to confront the vastly different values of rural human relationships, her arrogant, one-sided worldview is shattered. Through her painful, awkward interactions with Taku, she is essentially forced to grow up.
It might seem like a sudden, convenient shift in her personality, but honestly, that’s just “how life works.” Teenagers can mature in an instant, just as easily as they can regress. It proves just how incredibly vital and transformative our messy teenage encounters truly are.
About the Voice Actor, Yōko Sakamoto
Rikako is voiced by former stage actress Yōko Sakamoto. While primarily a theater actress, she later returned to the anime world to voice Sakura Kozakai in episode 6 of the OVA Shinigami no Ballad (which was notably directed by Tomomi Mochizuki, the director of Ocean Waves).
She is also the beautiful voice behind the film’s nostalgic ending theme, Umi ni Naretara (If I Could Be the Sea).
Yutaka Matsuno | Voiced by: Toshihiko Seki
The Tragic Best Friend
The “shadow protagonist” of the story (and famously left-handed). He is Taku Morisaki’s absolute best friend, and unfortunately, the tragic underdog of this romantic triangle. His earnest, open-hearted love for Rikako is ultimately, mercilessly crushed by the secret emotional bond she forms with Taku.
Matsuno is brilliant. Based on his academic trajectory, it is highly likely he successfully entered the prestigious Kyoto University. But he isn’t just a book-smart nerd; he is a young man possessing immense moral conviction and emotional maturity. Frankly, if you look at them purely as “prospects,” Matsuno is objectively a far better, healthier partner than the stubborn, emotionally repressed Taku. But adolescent romance is inherently absurd and rarely rewards the most logical choice.
Still, you have to admire Matsuno’s psychological resilience. Most teenage boys would spiral into complete social withdrawal after the girl they love coldly calls them “creepy” to their face. The fact that Matsuno endures this humiliation and ultimately forgives his best friend proves he possesses a heart of absolute steel. His emotional maturity is the quiet pillar supporting the entire narrative.
I can only pray that Matsuno finds immense happiness in his adult future.
About the Voice Actor, Toshihiko Seki
He is voiced by the incredibly prolific Toshihiko Seki. He has lent his voice to countless iconic properties; if you grew up watching anime, it is practically impossible to have avoided his voice.
Some of my personal favorite roles of his include Sakamoto Ryōma in O~i! Ryōma, Dew in The Legend of the White Whale, and the beloved Doi-sensei in Nintama Rantarō.
Yumi Kohama | Voiced by: Kae Araki
The Unwitting Catalyst
The only female student in Kochi who manages to break through Rikako’s icy exterior. Without Yumi serving as a gentle, stabilizing anchor, Rikako’s high school life in the countryside would have been an absolute, isolated nightmare.
From a strict plot perspective, her biggest contribution to the story is accidentally “passing the baton” to Taku. When Yumi realizes she cannot handle Rikako’s secret, unauthorized trip to Tokyo, she desperately calls Taku, effectively forcing him to become Rikako’s chaperone. You can almost hear Matsuno screaming internally, “Why didn’t she call me instead?!”
However, if you look at it through a slightly cynical lens, wasn’t Yumi essentially just a convenient tool for Rikako to execute her escape plan? The moment Taku agrees to come along, Rikako completely ditches Yumi at the airport without a second thought.
But despite this initial selfishness, the profound emotional growth Rikako experiences during the Tokyo trip ultimately transforms her. By the time they graduate, I truly believe Yumi becomes an irreplaceable, genuine best friend to her.
Regardless of the messy dynamics, Yumi did an excellent job pushing the plot forward. Taku definitely owes her a favor.
About the Voice Actor, Kae Araki
Voiced by the talented Kae Araki. While she frequently excels in strong supporting roles, her voice is instantly recognizable to millions of fans. She is legendary for voicing Chibiusa in Sailor Moon, Kari Kamiya in Digimon Adventure, and Hilde Schbeiker in Mobile Suit Gundam Wing.
Tadashi Yamao | Voiced by: Hikaru Midorikawa
The Background Friend
A cheerful, slightly oblivious friend within Taku’s broader social circle. He pops up occasionally to deliver exposition, but was his character strictly necessary to the plot? He seems to exist primarily as world-building filler, ensuring the audience doesn’t think Taku and Matsuno are complete loners with zero other friends.
The only substantial character detail we learn about him is that he harbored a secret crush on Yumi Kohama. And, amusingly, he finally works up the liquid courage to confess those feelings to her while heavily intoxicated at the high school reunion.
Nothing more, nothing less. A classic background buddy.
About the Voice Actor, Hikaru Midorikawa
He is voiced by the superstar Hikaru Midorikawa. For fans of my generation, his voice is eternally synonymous with the ultra-cool Kaede Rukawa from the legendary basketball anime Slam Dunk. His massive resume also includes Heero Yuy in Mobile Suit Gundam Wing, Seto Kaiba in the original Yu-Gi-Oh! anime, and Shintaro in Nangoku Shōnen Papuwa-kun.
Akiko Shimizu | Voiced by: Yuri Amano
The Enforcer of the Status Quo
The strict, highly traditional class representative who orchestrates the aggressive mob confrontation against Rikako behind the gymnasium, publicly shaming her for refusing to help with the cultural festival preparations. She undoubtedly believed she was acting with righteous, moral authority, but there is absolutely nothing more infuriating for a teenager than being self-righteously lectured by a peer.
Ultimately, her actions were incredibly immature, leveraging mob mentality to gang up on an isolated outsider. During the adult reunion, she casually brushes off the ugly incident with a laugh, saying, “Ah, we were just kids back then.” But she is only allowed the luxury of that breezy nostalgia because Rikako possessed a heart of absolute steel. If Rikako had been a fragile, insecure girl, that targeted bullying could have caused permanent psychological damage that couldn’t be hand-waved away with “we were just kids.”
To be fair, I was also fiercely passionate about my own high school cultural festivals, and dealing with apathetic classmates is incredibly frustrating. Surviving the claustrophobic, high-pressure ecosystem of a Japanese high school requires an immense capacity to “tolerate people who are completely different from you.” Teenagers naturally lack that empathy; hence, they act like “children.”
It is a messy, deeply contradictory phase of human development. But how else are we supposed to learn?
About the Voice Actor, Yuri Amano
Voiced by the highly acclaimed Yuri Amano. She is globally famous for voicing the fiercely loyal heroine Keiko Yukimura in Yu Yu Hakusho. However, my personal favorite performance of hers will always be Rain Mikamura from the wildly passionate Mobile Fighter G Gundam.
Other Characters
The Principal | Voiced by: Takeshi Watabe
The strict administrator who brutally canceled the highly anticipated junior high school trip, sparking Taku’s rebellion. Ultimately, “thanks” to his draconian cancellation, Taku and Matsuno were forced together in that empty classroom, forming a lifelong brotherhood. So, in a bizarre twist of fate, the Principal did them a massive favor.
Though, since the trip was canceled due to plummeting test scores, I suppose the lazy upperclassmen who refused to study are the real heroes here.
Kawamura | Voiced by: Kan Tokumaru
When Taku and his classmates are passionately protesting the cancellation of the school trip, this homeroom teacher attempts to shut them down by casually throwing out a highly toxic, sexist remark as easily as breathing: “You’re only looking down on her because she’s a woman, aren’t you?” The day will probably never come when he realizes the horrific irony of his own discriminatory attitude.
I choose to believe he was simply flustered and lost his composure after losing the debate moments prior, but it serves as a stark reminder of the exact type of adult I never want to become.
Rikako’s Father | Voiced by: Kinryu Arimoto
If he had just been a decent, faithful husband, the entire plot of Ocean Waves would never have happened. In a deeply cynical way, he is the biggest contributor to the narrative.
He is visibly panicked by Rikako’s sudden, unannounced arrival in Tokyo, but considering his wealth and status, he will probably manage to smooth things over with his new, younger mistress. You just know they had a massive screaming match the second Rikako left the apartment.
Okada | Voiced by: Jun’ichi Kanamaru
Rikako’s posh, Tokyo-based ex-boyfriend. He is the absolute epitome of “disagreeable urban elite.” The incredibly tense lunch scene involving Okada, Rikako, and Taku is the exact crucible where Taku transforms from an annoying chaperone into a profoundly special person in Rikako’s heart.
While Okada and Rikako are bantering like typical, superficial high school elites, Taku—armed with the raw, emotional lecture he received from his mother about “a parent’s burden”—brutally shuts them down, dismissing them both as spoiled “children.”
If Taku hadn’t absorbed that scolding from his mother, he never would have possessed the moral authority to stand up to Okada, and Ocean Waves would have ended completely differently.
Taku Morisaki’s Mother | Voiced by: Ai Satou
As mentioned above, Taku’s mother is the unwitting MVP of the film. By angrily lecturing Taku about the agonizing sacrifices a mother makes, she accidentally armed her son with the exact emotional ammunition he needed to win Rikako’s respect.
I highly doubt Taku realizes how pivotal his mother’s rant was to his love life, but if he ever figures it out, he will owe her an unpayable debt of gratitude.
The Proprietress | Voiced by: Reiko Suzuki
The kindly older woman running the restaurant where Taku works part-time, delivering the crucial line: “Taku, phone call for you.”
The Apprentice | Voiced by: Tomokazu Seki
The background apprentice chef sweating it out in the kitchen at Taku’s part-time job.
The images used in this article are from Studio Ghibli Still Images.
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