Yokohama Neighbors Starring Ryusei Onishi and Yoshitaka Hara

Naniwa Danshi‘s Ryusei Onishi and timelesz‘ Yoshitaka Hara have been announced as double leads in the upcoming TV drama “Yokohama Neighbors,” a new co-production between WOWOW and Tokai Television. This highly anticipated live-action adaptation is based on Keiya Iwai‘s popular novel series, often described as a Reiwa-era version of “Ikebukuro West Gate Park” (also known as IWGP).

The story is centered around a young man who lost his father in a mysterious accident and a detective —his much older childhood friend— as they confront the hidden darkness and social issues of contemporary Japan. The series is currently scheduled for two seasons: the first will air on terrestrial television starting in January 2026, while the second will broadcast and stream starting in March.

Ryusei Onishi and Yoshitaka Hara pose together in Yokohama with a city skyline in the background.

Story overview

“Yokohama Neighbors” follows Ryuichi “Ron” Koyanagi (Onishi), a 22-year-old Yokohama native who lost his father in an accident 13 years ago and now drifts through life, unemployed and unmotivated. His childhood friend Kinta Iwashimizu (Hara) —now a detective in the Kanagawa Prefectural Police— has quietly watched over him since that tragedy. Orphaned young, Kinta was inspired to become an officer by an encounter with a kind policeman.

One day, a woman scammed through an underground “black-market job” approaches Ron for help. Despite his reluctance, Ron —who once solved a classmate’s attempted double suicide and was nicknamed the “Detective of Yamashitacho”— finds himself dragged into another investigation, unknowingly setting off a chain of events that will bring him face to face with the truth about his father’s death.

Kinta, who responded to the scene as a rookie officer all those years ago, has never stopped questioning what really happened, or why Ron’s mother vanished afterward. Though 13 years older, he’s approachable and often teased, serving as a warm, protective big brother to Ron while continuing to search for the truth about the young man’s parents. As the pair navigate cases together, they encounter a host of social issues plaguing modern Japan: online harassment, influencer culture, gender identity, and the exploitation of vulnerable youth.

In a world where it’s easy to lose faith in others, the show asks: “What if someone nearby was always willing to reach out a helping hand?” The phrase “Shinjin Zenrin” (親仁善隣) —”Be kind and neighborly,” carved into the Zenrin Gate in Yokohama’s Chinatown— is a guiding theme. Ron, who learned this from his late father, extends kindness to everyone he meets. Having no current education, job, or wealth, he uses words unbound by social status to help those around him, believing that beyond hardship, there is always light.

About the production

Filmed primarily on location in Yokohama, the series adapts Iwai’s best-selling Yokohama Neighbors novels published by Haruki Bunko. The books, now spanning six volumes, follow young people confronting the shadows of modern urban life and have earned acclaim as the “Reiwa-era IWGP.”

Season 1 presents a series of case-based episodes, each inspired by real social issues such as black-market jobs, resale scams, and land fraud. While each episode tells a complete story centered on a woman’s perspective, the mystery of Ron‘s father’s “accident” gradually unfolds in the background —questioning whether human nature leans toward light or darkness. As Ron and Kinta pursue these mysteries, they also draw closer to the truth behind the death of Ron‘s father.

Following acclaimed joint productions such as “Professor Takatsuki’s Examination” and “Gifted,” “Yokohama Neighbors” marks the fifth installment in the WOWOW × Tokai TV drama series lineup, promising a stylish, emotionally charged mystery.

A young man with black, shoulder-length hair wears a green and yellow zip-up jacket over a gray t-shirt. He stands outdoors, looking thoughtfully into the distance, with modern buildings in the background.

A young man in a dark suit adjusts his tie while standing beside a police car with a red light on top, surrounded by greenery.

Comments from the cast and the original author

Ryusei Onishi

“I had never been to Yokohama Chinatown before, so I’m really excited—it all feels fresh and new.

Yokohama Neighbors isn’t just a human mystery; it deals with familiar real-world issues while weaving in modern themes like social media. Reading the script really made me think.

The gap between this role—a high school graduate with no job—and my previous characters is huge, and I can’t wait to dive in! Ron might look like he’s “got nothing,” but he carries the spirit his late father taught him: “help people” and “cherish your neighbors.”

Because he can’t ignore those in trouble, people in Yokohama rely on him—and that makes him charming. When he’s with Kinta, I also want to show his more childlike, affectionate side.

I’ll emphasize a more mischievous, lively side of myself to create contrast—please look forward to that!

From reading the script, I could already imagine Hara’s Kinta as a dependable older brother type. After meeting him in person, I felt the same sense of reassurance—he has that natural “big brother” aura. Even during the script reading, he was already Kinta, so I’ll follow his lead on set.

Each character in Yokohama Neighbors has a strong personality, and I hope viewers will cheer us on as Ron and the others grow through the cases and their encounters with the “neighbors.”

The warmth of Chinatown, the beautiful Yokohama scenery, the delicious Chinese food, and the satisfying feeling of solving mysteries—all of it makes this a rich and rewarding show. Please enjoy it all!”

Yoshitaka Hara

“I’m thrilled to take on my first leading role in a drama series. I don’t have much experience acting on screen yet, but I want to give it everything I’ve got and grow as an actor. I hope everyone watching will enjoy the show!

My character, Kinta, was once helped by the police himself. Deep down, he’s driven by the desire to “help others” and “do good.” He’s passionate about saving Ron, whose past he knows, but when he’s with the “Neighbors,” he’s also a warm, gentle older brother figure. I want to portray both sides of him with care.

I used to think Ryusei might be a bit intimidating because of how outspoken he seems on variety shows—but that impression disappeared immediately. On set, he’s kind and natural, which makes it easy to act comfortably. His playful and genuine nature really resembles Ron’s. I’m excited to keep building our bond as we film.

Yokohama Neighbors is about helping those around you, and about the bonds and connections between friends. Working with peers my own age, I hope that sense of camaraderie shines through in the final product and reaches viewers.
People often see the “dark side” of others as something negative, but reading the original novel made me think that seeing someone’s hidden side just means you’ve gotten closer to them.

Through this drama, I hope viewers will think, “Having friends is a great thing.” I’ll give this project my all.”

Keiya Iwai

“The biggest motivation behind writing the Yokohama Neighbors series was to depict the era we live in. “This very moment” feels ordinary now, but when we look back in five or ten years, it can seem incredibly distant.

That’s why I wanted to preserve it in the form of a novel—to always be able to return to it.

With this live-action adaptation, I believe “this very moment” will be even more powerfully preserved and passed on. And with Ryusei Onishi and Yoshitaka Hara starring, I’m convinced it will become a truly symbolic work of our time.

As a viewer myself, I’m really looking forward to seeing Ron and Kinta’s story come to life.”

Broadcast information

Title: WOWOW × Tokai TV Joint Drama – Yokohama Neighbors
Season 1 schedule: January 10 – February 28, 2026 (8 episodes). Every Saturday from 11:40 p.m. to 12:35 a.m. on Tokai TV / Fuji TV Nationwide Network
Season 2 schedule: March 2026 on WOWOW Prime and WOWOW On Demand (schedule to be announced)
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