Who Are The Voice Actors In Summer Ghost?

Summer Ghost' has this dreamy, melancholic vibe that really sticks with you, and the voice cast absolutely nails it. Chiaki Kobayashi brings so much quiet intensity to Aoi, the boy who can see ghosts—his voice has this fragile yet determined quality that perfectly matches the character's search for meaning. Rina Kawaei as Ryo, the ghost girl, is hauntingly beautiful; she balances sadness and warmth in a way that makes you ache for her. And Shōya Chiba as Kotaro adds this grounded, slightly cynical energy that contrasts brilliantly with the others. It's one of those rare cases where the voices don't just perform but feel like they inhabit the roles. I rewatched it recently, and their performances hit even harder the second time.

What’s fascinating is how much nuance they pack into such a short film. Kobayashi’s pauses alone speak volumes—Aoi’s loneliness isn’t spelled out; you hear it in the way his voice wavers when he asks Ryo about the afterlife. Kawaei’s laughter as Ryo has this bittersweet ring, like she’s clinging to joy despite everything. Even the smaller roles, like Kotaro’s sister (voiced by Ayumu Murase), add layers with just a few lines. The dub’s solid too, but there’s something about the original performances that feels like eavesdropping on real souls. Makes me wish the film was longer just to spend more time with them.

I stumbled onto 'Summer Ghost' during a rainy weekend, and the voice acting completely pulled me in. Chiaki Kobayashi’s portrayal of Aoi is masterful—he sounds like someone carrying the weight of the world but trying to sound casual about it. There’s a scene where he whispers, 'Do ghosts regret not living longer?' and it wrecked me. Rina Kawaei’s Ryo is equally mesmerizing; her voice flutters between playful and heartbreaking, especially when she talks about her unfinished life. Shōya Chiba’s Kotaro is the skeptic of the group, and his dry delivery provides just enough edge to keep the story from feeling too floaty.

The chemistry between the three leads is subtle but electric. You can tell they’re reacting to each other in real time, not just reading lines. Even the silences feel intentional—like when Ryo hums that lilting tune, or Aoi’s breath catches mid-sentence. It’s a testament to how voice acting can elevate animation into something deeply personal. I’ve since hunted down other works by these actors, and it’s wild how versatile they are. Kobayashi’s range, especially, goes from tender in this to outright fiery in shows like 'Fire Force.'

The voice cast of 'Summer Ghost' is small but mighty. Chiaki Kobayashi (Aoi) and Rina Kawaei (Ryo) deliver performances that linger long after the credits roll. Kobayashi’s raw, understated delivery makes Aoi’s existential dread palpable—you believe every hesitant word. Kawaei, meanwhile, turns Ryo into this ethereal yet deeply human presence; her voice cracks at just the right moments to gut you. Shōya Chiba’s Kotaro is the perfect foil, his sarcasm masking his own vulnerabilities. Together, they create a dynamic that’s tender, tense, and utterly real. It’s a reminder that great voice acting isn’t about big gestures but the tiny, honest ones.

Aoi: Chika Anzai. Tomoya: Miyu Irino. Ryo: Ryohei Kimura. Supporting roles by Nobunaga Shimazaki and Kana Hanazawa. It's a concise list for a concise film. What I love is that each voice is so distinct and fitting. Aoi's is airy and melancholic, Tomoya's is grounded and searching, Ryo's is more blunt and practical. You get a sense of their personalities just from how they speak. The film uses silence effectively, so when the characters do talk, you listen. The voice actors had to make every line count, and they absolutely did. It's a beautiful, understated piece of vocal artistry that complements the stunning animation.