Where Was Overflow Season 1 Episode 1 Filmed And Set?

You can practically taste the sea in the first episode of 'Overflow' — that opening sequence brims with seaside atmosphere. From what I dug up and the little production trivia the creators slipped out at panels, episode 1 wasn't shot like a live-action show; it was produced in-studio as an animated piece. Most of the animation work, voice recording, and compositing were handled by a Tokyo-based studio, with background art and color grading done by a small team that specializes in urban coastal landscapes. In animation terms, "filmed" means the cameras and lighting were virtual, but the crew did on-location reference trips to ground the visuals in reality.

The narrative itself is set in a fictional port town — the script intentionally leaves the name vague so the city feels familiar but not pinned to one real place. That said, the visual cues are lifted straight from real locations: think the red-brick warehouses and waterfront promenades of Yokohama, the narrow cliff-side lanes and shrine on Enoshima, and the low-slung fishing harbor vibe you get in Kamakura. The art director mentioned borrowing specific details like the ferry silhouettes and a seaside amusement wheel to give the town personality. I love how that mix makes the setting feel lived-in without forcing the story into a real map.

Behind the scenes, the team used extensive photo references and a few short on-site shoots for texture photography — cobblestones, rusted railings, and signage — which were then painted over by background artists in the Tokyo studio. Voice actors recorded in one of Suginami's studios (a literal actor hub), and the sound design layered in real harbor ambience recorded from those same coastal trips. So while there's no single filming location as in a live-action shoot, the episode is a hybrid of in-studio animation craft and concrete, on-location inspiration. For me, that blend is why episode 1 feels both cinematic and intimate: it’s clearly crafted in a studio but carries the soul of real seaside towns, and I keep replaying shots just to soak up the details.

When I watched episode 1 of 'Overflow' I was struck by how convincingly it stitched together studio production with real-world seaside textures. It was produced in Tokyo — the animation, compositing, and voice sessions all happened at local studios — but the creative team did reference photography trips to actual coastal spots, so "filming" in the conventional sense didn't happen; instead they gathered real-world material to paint over and animate. The story is set in an intentionally fictional port town that borrows heavily from places like Yokohama and Enoshima: ferris wheels, brick warehouses, narrow, winding lanes, and a working harbor full of small boats. Those borrowed details give the town an authentic feel without tying the narrative to a specific city, and the soundscape uses recorded harbor ambience to sell the illusion. Personally, I love that approach — it makes the world feel tangible while letting the story keep its own identity.