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Neighborhood · Shinjuku

Ochiai / Nakai

落合・中井

A dyeing town named alongside Kyoto and Kanazawa in the Showa era, where dyed cloth hangs over the river in February

Street Environment 6.9 · Convenience 8.2

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From people who know it

Local guide

01First impressions

On the slope in Nakai, the slopes from Ichi-no-saka to Hachi-no-saka (Slope 1 through Slope 8) line up side by side; some are flanked by Oya stone walls and hedges, others curve left and right surrounded by bamboo groves. Kami-Ochiai, meanwhile, sits on the low ground along the Myoshoji River, with houses packed closely together; the lanes are full of greenery and have a strong sense of everyday life. From the early Showa era into the Showa 30s, more than 300 dyeing-related businesses gathered along the Kanda River and Myoshoji River basins, making the area one of Japan's three major dyeing centers alongside Kyoto and Kanazawa, and artisans and dyers who have inherited these techniques still gather in this area today.

In recent years, this history returns to the river's surface every February. Some no Komichi runs for three days, during which dyed cloth is hung across the Myoshoji River, and shops around Nakai Station also hang dyer-made noren curtains at their entrances. What it recreates is the sight, from before the Showa 30s, of dyed cloth being rinsed in the river.

On an ordinary day, Kami-Ochiai is mostly residential; its three chome are home to about 15,000 people, while only about 3,500 people work there. Along the old road Arai Yakushi-do, small shops line up to form a shopping street.

02What works

On the slope, the Hayashi Fumiko Memorial Hall sits right next to Yon-no-saka (Slope 4). This was the new home that Hayashi Fumiko, author of Horoki (Diary of a Vagabond), moved into in 1941; she lived there until she died in 1951, and the garden has wild mountain flowers blooming through all four seasons.

Nakai Station is served by the Seibu Shinjuku Line and the Oedo Line, and together with the Tozai Line at Ochiai Station, that makes three lines in total. For public transit, it ranks 87th among Tokyo's 395 neighborhoods, and for everyday convenience it ranks 90th. The Oedo Line runs directly to central Tokyo, so many nearby residents especially rely on Nakai Station.

03Heads-up

Judging from our street photos, cleanliness ranks 357th among Tokyo's 395 neighborhoods, and sidewalks rank 367th — the two lowest-ranked items for this neighborhood. Kami-Ochiai's housing is dense, and with major roads running along its east and south sides, the tall buildings along those roads affect the look of the back lanes. Seibu's Nakai Station and the Oedo Line's Nakai Station are separated by the Myoshoji River with no passage connecting them, so transferring means exiting the station and walking a stretch first.

04A bit of history

In 1927, Nakai Station on the Seibu Shinjuku Line opened. From the early Showa era onward, houses were gradually built on the slopes of Nakai, and the slope roads were cut through one by one as the residential land was developed.

In 1930, the year Horoki was published, Hayashi Fumiko moved to Ochiai, and it wasn't until 1939 that she bought this plot of land in Nakai. Nearly forty years after the Seibu Line opened, Ochiai Station on the Tozai Line finally opened in 1966, and in 1997 the Oedo Line also reached Nakai.

Compiled by TidyMap with AI from public sources · updated 2026-10 · 10 sources

Scores

Compared with the 395 Tokyo neighborhoods in this guide (scores 0–10)

Street Environment6.9No. 352
Cleanliness8.8No. 357
Buildings7.8No. 224
Sidewalks4.2No. 367
Greenery6.8No. 289
Convenience8.2No. 90
Transit7.5No. 87
Everyday shopping8.6No. 82
Healthcare8.8No. 152

What's here

See the full list
  • Hayashi Fumiko Memorial HallHayashi Fumiko Memorial Hall was the writer's home from 1941 to 1951, with a garden of wild plants that bloom through the seasons.
  • Ochiai Chuo ParkOchiai Chuo Park is built on top of a sewage treatment plant.
  • Ochiai Daini Elementary SchoolCatchment covers 36%
  • Ochiai Daigo Elementary SchoolCatchment covers 27%
  • Hakuo Elementary SchoolCatchment covers 20%
  • Ochiai Daiichi Elementary SchoolNearby・Catchment covers 14%
  • Momozono Daini Elementary SchoolNearby・Catchment covers 4%
  • Nishi Toyama Junior High SchoolNearby・Catchment covers 36%
  • Ochiai Daini Junior High SchoolNearby・Catchment covers 33%
  • Daigo Junior High School (Nakano)Nearby・Catchment covers 14%
  • Nakano Higashi Junior High SchoolNearby・Catchment covers 10%
  • Ochiai Junior High School (Shinjuku)Nearby・Catchment covers 7%
  • Mejiro University Junior CollegeNearby
  • Mejiro UniversityNearby
  • Otsuma Nakano High SchoolNearby
  • Mejiro Kenshin High SchoolNearby
  • Meiji University Nakano High SchoolNearby
  • Tokyo Fuji UniversityNearby
  • Seibo Hospital0.4 km away
  • Shimo-Ochiai
  • NakaiNakai Station serves the Seibu Shinjuku Line and the Oedo Line, with the two stations separated by the Myoshoji River.
  • OchiaiOchiai Station is a Tozai Line stop beneath the border between Shinjuku and Nakano wards.

Hospitals with inpatient beds (2020 data), public elementary and junior high schools whose catchment covers this area, high schools and universities within 1 km, stations, parks of 1 ha or more, and large shopping malls and department stores. Many Tokyo junior high students attend private schools, so junior high catchments are only a guide.

92 blocks · Curated boundary · Data version 2026-10-30

How are these measured?

Compared against the Tokyo neighborhoods in this guide; metrics without enough data are not ranked. Shopping counts convenience stores plus the nearer of a supermarket or a traditional market (public and private retail markets); night markets, vendor zones and shopping-street shops are not counted. Transit is rail-first with a lower weight for buses.

TidyMap rates the street environment and everyday convenience. It does not assess the home itself, safety, noise or actual living experience. About data limits

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