Step out of the north exit of Roka-koen Station on the Keio Line and Seijo Seika is about a minute away, right where the shops give way to a residential neighborhood. The name means "Seijo Greengrocer" — it comes from the wholesale produce business the owner's great-grandfather ran in the Seijo area of Setagaya, and the owner kept it for his ramen shop. It is a small place with just six counter seats. Within a few years of opening in June 2020 it was listed as a Bib Gourmand in the MICHELIN Guide Tokyo 2024, and it was named to Tabelog's "Ramen TOKYO Hyakumeiten 2025" (announced December 2025). The signature bowl is shio soba, built on a clear broth drawn mainly from several kinds of dried sardines plus katsuobushi and saba-bushi (dried bonito and mackerel flakes).
What kind of shop it is
Seijo Seika opened in June 2020. There are only six counter seats, so capacity is limited. The name, as noted above, is inherited from the family's produce wholesale business in Seijo — a trade with no direct connection to ramen.
The broth is built mainly on a seafood dashi combining several selected kinds of niboshi (dried sardines) with katsuobushi and saba-bushi, with animal-based ingredients kept to a minimum, according to a reported interview with the shop (Arukikata correspondent blog).
Its listings are specific. Seijo Seika appeared as a Bib Gourmand (good quality cooking at a reasonable price) in the MICHELIN Guide Tokyo 2024. It was not among the 17 ramen shops given a Bib Gourmand in the Tokyo 2025 edition, according to the list published by ramen writer Ide Taicho on Yahoo! News Expert, so it is not listed in the 2025 edition. It was, however, selected for Tabelog's officially announced "Ramen TOKYO Hyakumeiten 2025" list, published on 2 December 2025.
Seijo Seika now runs three shops: the second is Kasho in Chitose-Karasuyama, and the third is Seijo Zeinikuten in Roka-koen (opened April 2025, serving Jiro-style ramen). They aim at quite different styles, so check the shop name before you set out if you have a particular bowl in mind.
What to order
You order by buying a meal ticket from the vending machine at the entrance — a common system in Japanese ramen shops, where you pay first and hand the ticket to the staff. The core menu is shio soba and shoyu soba. The "shio soba and pork rice bowl set" costs ¥1,150, and a seasoned egg topping is ¥120 (both as reported in June 2025). For a first visit, the set gives you the clearest picture of what the shop does.
Prices for a single bowl of shio soba or shoyu soba, and for other toppings, could not be confirmed from an official source, and prices can change — go by what the ticket machine shows on the day.
Tips for visiting
Opening hours are the main thing to check. Seijo Seika has no official website, and announcements are made on its official Instagram (@seijoseikano1). Reports from June 2025 give hours of 11:00–15:00 and 17:00–23:00 Monday to Friday, and 11:00–23:00 straight through on weekends and holidays (last order 22:45), with irregular closing days — but secondary sources disagree with each other, and some list an earlier closing time or a regular Thursday closure. Check the official Instagram before you go, including for temporary closures and changes to hours.
The shop is on the first floor of Roka Park Hill at 3-1-11 Minami-Karasuyama, about a minute from the station's north exit — hard to miss, and a single Keio Line ride from Shinjuku. Given the six-seat counter, it is worth coming outside peak hours and travelling light.