# Japanese restaurant near Isu Station for cold udon: Kosi Isu Branch - By Seoan (https://superchart.com/en/@screen-shelf-stops/) - Written Sep 10, 2026 - Updated Sep 12, 2026 - Local places › Restaurants › Dongjak, Seoul - Sponsored: This review was written with support for a visit to the restaurant. - English edition: https://superchart.com/en/@screen-shelf-stops/isu-cold-udon-tonkatsu-kosi/ - Also in: [한국어](https://superchart.com/ko/@screen-shelf-stops/isu-cold-udon-tonkatsu-kosi/index.md) · [日本語](https://superchart.com/ja/@screen-shelf-stops/isu-cold-udon-tonkatsu-kosi/index.md) · [简体中文](https://superchart.com/zh-cn/@screen-shelf-stops/isu-cold-udon-tonkatsu-kosi/index.md) · [繁體中文](https://superchart.com/zh-tw/@screen-shelf-stops/isu-cold-udon-tonkatsu-kosi/index.md) · [Tiếng Việt](https://superchart.com/vi/@screen-shelf-stops/isu-cold-udon-tonkatsu-kosi/index.md) · [ไทย](https://superchart.com/th/@screen-shelf-stops/isu-cold-udon-tonkatsu-kosi/index.md) · [Bahasa Indonesia](https://superchart.com/id/@screen-shelf-stops/isu-cold-udon-tonkatsu-kosi/index.md) · [Bahasa Melayu](https://superchart.com/ms/@screen-shelf-stops/isu-cold-udon-tonkatsu-kosi/index.md) · [Español](https://superchart.com/es/@screen-shelf-stops/isu-cold-udon-tonkatsu-kosi/index.md) ## In short Kosi Isu Branch is a Japanese restaurant above Exit 9 of Isu Station in Dongjak, Seoul. After more than 10 solo visits, the writer recommends Tori Ten Bukkake Udon with extra tonkatsu for 16,000 won, along with cheese tonkatsu and sweet potato cheese croquettes. Verdict: a filling, great-value choice for cold udon and tonkatsu. ## Good to know - **Location**: Directly above Exit 9 of Isu Station; 1 minute on foot - **Parking**: 1 hour of free parking with parking at Isu Xi Complex Shopping Mall - **Basic cold udon**: ₩9,000 - **Tori Ten Bukkake Udon + extra tonkatsu**: ₩16,000 - **Service**: Yubu sushi included with udon orders - **Seating**: Counter seating available *as written by the visitor on Sep 10, 2026* My favorite solo-dining spot around Sadang and Isu: Kosi, an Isu Station favorite. It is such a good restaurant for eating alone at lunch or dinner near Isu Station that I have already visited at least 10 times for solo meals. ![Signature dishes at Kosi Isu Branch](https://img.superchart.com/images/isu-cold-udon-tonkatsu-kosi/isu-cold-udon-tonkatsu-kosi-01-spab5-1200.webp) If you are looking for a great-value Isu Station spot specializing in tonkatsu and cold udon that tastes great too, I recommend it. Let me start my review of the solo-dining menu picks I ordered at Kosi near Isu Station! ## Where is Kosi Isu Branch near Isu Station? Kosi is an Isu Station favorite in an unbelievably convenient location, just a one-minute walk from the station. It is directly above Exit 9, and parking at the Isu Xi Complex Shopping Mall comes with one hour of free parking. ![Kosi Isu Branch near Exit 9 of Isu Station](https://img.superchart.com/images/isu-cold-udon-tonkatsu-kosi/isu-cold-udon-tonkatsu-kosi-02-1ejaa-900.webp) It specializes in tonkatsu and udon near Isu Station, making its noodles in-house, so the noodles are especially incredible. It is also a place that does tonkatsu really, really well. ![House-made udon and tonkatsu at Kosi Isu Branch](https://img.superchart.com/images/isu-cold-udon-tonkatsu-kosi/isu-cold-udon-tonkatsu-kosi-03-4garw-900.webp) ## The dinner rush and solo-dining seats This Isu Station lunch and dinner spot always has a wait during peak hours. When I visited around dinnertime, every seat but one was taken. ![Interior seating at Kosi Isu Branch during dinner](https://img.superchart.com/images/isu-cold-udon-tonkatsu-kosi/isu-cold-udon-tonkatsu-kosi-04-18box-900.webp) There are counter seats that make solo dining near Isu Station easy and comfortable. You can eat while looking out the window. ![Window-facing counter seats at Kosi Isu Branch](https://img.superchart.com/images/isu-cold-udon-tonkatsu-kosi/isu-cold-udon-tonkatsu-kosi-05-1qkdh-900.webp) ## Tori Ten Bukkake Udon with extra tonkatsu ![Tori Ten Bukkake Udon with extra tonkatsu](https://img.superchart.com/images/isu-cold-udon-tonkatsu-kosi/isu-cold-udon-tonkatsu-kosi-06-xngw6-900.webp) ![Kosi Tori Ten Bukkake Udon and extra tonkatsu set](https://img.superchart.com/images/isu-cold-udon-tonkatsu-kosi/isu-cold-udon-tonkatsu-kosi-07-1vm3a-900.webp) Tori Ten Bukkake Udon (cold udon topped with chicken tempura) + extra tonkatsu. After visiting Kosi near Isu Station more than 10 times, this is my absolute favorite combination. Kosi's best-selling Tori Ten Bukkake Udon comes with tonkatsu, and I strongly recommend this set because cold udon and fried dishes go so well together. ![Udon meal set with yubu sushi](https://img.superchart.com/images/isu-cold-udon-tonkatsu-kosi/isu-cold-udon-tonkatsu-kosi-08-pgn1b-900.webp) Kosi is great for solo dining near Isu Station because even alone, you can have a filling meal. Even with a whole tableful like this, it costs only ₩16,000—such amazingly generous value. When you order an udon menu item at Kosi, yubu sushi (seasoned fried-tofu rice pockets) comes free, so it helps fill the rice part of your stomach too. ![Kosi cold udon menu](https://img.superchart.com/images/isu-cold-udon-tonkatsu-kosi/isu-cold-udon-tonkatsu-kosi-09-9oaqm-900.webp) I have tried all three—cold udon, hot udon, and kama udon—but personally, cold udon is my favorite. The springy, chewy texture of the noodles comes through even more. ![Cold udon with springy noodles](https://img.superchart.com/images/isu-cold-udon-tonkatsu-kosi/isu-cold-udon-tonkatsu-kosi-10-1tu7l-900.webp) Basic cold udon is only ₩9,000, making this Isu Station favorite overflowing with value. ![Basic cold udon menu item](https://img.superchart.com/images/isu-cold-udon-tonkatsu-kosi/isu-cold-udon-tonkatsu-kosi-11-w1aqd-900.webp) ![A bowl of Kosi basic cold udon](https://img.superchart.com/images/isu-cold-udon-tonkatsu-kosi/isu-cold-udon-tonkatsu-kosi-12-xo5i0-900.webp) ## It is an udon place, but the tonkatsu is the real deal too I strongly recommend adding tonkatsu. It is among the best tonkatsu I have had near Isu Station. People seem to order lots of udon because they think Kosi is an udon specialist, but the tonkatsu here is the real deal too. The slightly pink meat inside is so tender and delicious. ![Tender meat inside the extra tonkatsu](https://img.superchart.com/images/isu-cold-udon-tonkatsu-kosi/isu-cold-udon-tonkatsu-kosi-13-bfc2a-900.webp) That is why I also strongly recommend Kosi as a tonkatsu spot near Isu Station. ![Kosi tonkatsu menu](https://img.superchart.com/images/isu-cold-udon-tonkatsu-kosi/isu-cold-udon-tonkatsu-kosi-14-1chr3-900.webp) ![Cheese-filled cheese tonkatsu](https://img.superchart.com/images/isu-cold-udon-tonkatsu-kosi/isu-cold-udon-tonkatsu-kosi-15-1ac8z-900.webp) They also sell standalone tonkatsu dishes, making it a good place for solo dining near Isu Station. For another menu item, I ordered the cheese tonkatsu: four plump pieces packed with cheese, rich and delicious. Kosi really nails fried food, which is why I always ordered karaage with my cold udon too. The cheese tonkatsu at Kosi was fried to just the right degree as well. The coating was neither too thin nor too thick—just right. ![Sweet potato cheese croquette side dish](https://img.superchart.com/images/isu-cold-udon-tonkatsu-kosi/isu-cold-udon-tonkatsu-kosi-16-1k3nf-900.webp) The sweet potato cheese croquette I ordered as a side was also so good. It was packed to bursting with sweet potato, so this sweet-potato lover was happy! It was not cheap-tasting cheese sweet potato at all; it was genuinely delicious, with a wonderful, savory sweet potato-and-cheese combination. ## From solo meals to family dining ![Finishing a meal at Kosi Isu Branch](https://img.superchart.com/images/isu-cold-udon-tonkatsu-kosi/isu-cold-udon-tonkatsu-kosi-17-a04hn-900.webp) For anyone looking for a great solo-dining spot near Isu Station, or a tasty Isu Station restaurant for tonkatsu and udon, I recommend Kosi! Kosi Isu Branch specializes in cold udon and tonkatsu and is so close to Isu Station that it is easy to visit anytime. Whatever you order, it is hard to go wrong, and its solo-friendly portions and great value have kept me coming back again and again. If you are looking for a good restaurant around Sadang-dong near Isu Station, I strongly recommend Kosi Isu Branch. With free parking, it is also a great place to visit with family. The staff are always kind whenever I go, making for a pleasant meal :) ## Where it is - Kosi Isu Branch (코시 이수점) - 300 Sadang-ro, Dongjak-gu, Seoul, South Korea (서울특별시 동작구 사당로 300 1층 126호, 127호) - 서울특별시 동작구 사당로 300 1층 126호, 127호 - 37.4844642, 126.9808303 - Google Maps: https://www.google.com/maps/search/%EC%BD%94%EC%8B%9C%20%EC%9D%B4%EC%88%98%EC%A0%90/@37.4844642,126.9808303,17z --- Superchart · https://superchart.com/en/@screen-shelf-stops/isu-cold-udon-tonkatsu-kosi/ · https://superchart.com/llms.txt