Tonkatsu set for two in Yeonnam-dong, ₩39,000 with udon: Katsu Monster

In short

Katsu Monster Yeonnam Main Branch (카츠몬스터 연남본점) is a Japanese tonkatsu restaurant in a Yeonnam-dong alley in Mapo, Seoul, an 8-minute walk from Hongik Univ. Station Exit 3. On a Yeonnam-dong outing, two people shared the 2-person set of fillet katsu, cheese katsu and cold udon for ₩39,000: thick pork tenderloin, cheese katsu piled with mozzarella and a full single portion of cold udon. Even for a picky tonkatsu eater, Katsu Monster was a hugely satisfying katsu spot in Yeonnam-dong.

Main photo of Katsu Monster Yeonnam Main Branch

Good to know

Getting there
Hongik Univ. Station Exit 3 · 6-min walk (store listing, Oct 6, 2026)
Location
Unit 101, 1F, 42-6 Donggyo-ro 38-gil, Mapo-gu, Seoul; 8 minutes from Hongik Univ. Station Exit 3
Hours
10:30–21:00 (break time 15:30–16:30)
Options
Group seating, takeout, delivery
Seating
Tables for 2, tables for 4, counter seats, terrace seats by the entrance
What we ordered
2-person set (fillet katsu + cheese katsu + cold udon), ₩39,000
Comes with
Tonkatsu, cabbage salad, rice, miso soup, kkakdugi (cubed radish kimchi), gangjeong (sweet crispy snack) for dessert
Refills
Rice, soup and salad refilled on request
Price reference
₩39,000 ≈ $29.5 (2026-10-23)

as written by the visitor on Jun 7, 2026

Main photo of Katsu Monster Yeonnam Main Branch

I went on an outing to Yeonnam-dong recently and had tonkatsu (breaded pork cutlet) for lunch for the first time in a while. I'm pretty picky about my tonkatsu, and Katsu Monster Yeonnam Main Branch (카츠몬스터 연남본점) made me super, super happy. Here's my honest review, go ◡̎

Katsu Monster Yeonnam Main Branch: hours and location

Katsu Monster Yeonnam Main Branch is open 10:30 - 21:00, with a break time from 15:30 to 16:30. Group seating, takeout and delivery are all available.

Location of Katsu Monster Yeonnam Main Branch in a Yeonnam-dong alley

This Hongdae restaurant is 8 minutes from Hongik Univ. Station Exit 3, right in the middle of a Yeonnam-dong alley. It sits in that classic Yeonnam-dong backstreet atmosphere, so even the walk there looked like a good date course :D

Exterior of Katsu Monster Yeonnam Main Branch on a Yeonnam-dong backstreet

There are terrace seats at the entrance too, so on a nice day you could eat tonkatsu with an outdoor-drinking-tent vibe. So much charm ~_~

Entrance and terrace seats at Katsu Monster Yeonnam Main Branch
Clean interior of Katsu Monster Yeonnam Main Branch
2-person and 4-person tables at Katsu Monster Yeonnam Main Branch
Bar seats and interior atmosphere at Katsu Monster Yeonnam Main Branch
Seating layout inside Katsu Monster Yeonnam Main Branch

Is Katsu Monster in Yeonnam-dong good for eating alone?

The inside has 2-person tables, 4-person tables and bar seats, so it works for solo meals and dates alike. The space is small but clean, and the tables are spaced widely, so it looked good for a date or a solo visit. The menu has descriptions with photos, which made choosing easy ෆ ͙˚˖

Katsu Monster menu with photos and descriptions
Katsu menu at Katsu Monster Yeonnam Main Branch
Katsu Monster set menu and side menu

Katsu Monster menu: how to choose the 2-person set

The menu has loin katsu (rosu-katsu), fillet katsu (hire-katsu), premium loin katsu (pork collar) and cheese katsu, plus set menus you can eat with noodle dishes and a wide range of sides, so it's easy to eat well. There were two of us, so we ordered the 2-person set. You can pick two kinds of tonkatsu, so we chose fillet katsu and cheese katsu, with cold udon as the noodle dish ⸝⸝⸝⸝◟̆◞̆♡

Tonkatsu sauce, salt and dressing on the table

Every table has tonkatsu sauce, salt, salad dressing and other sauces and tableware, so you can customize things to your own taste *_*

Sauces and tableware at a Katsu Monster table
Sauce selection on a Katsu Monster table

What comes in Katsu Monster's ₩39,000 set for two?

  • What we ordered: 2-person set (fillet katsu + cheese katsu + cold udon) ₩39,000
  • Basic setup: tonkatsu, cabbage salad, rice, soup, kkakdugi (cubed radish kimchi), gangjeong (crunchy sweet rice snack) for dessert
  • Rice, soup and salad can be refilled if you need, they say

The 2-person set came out as one big, generous spread like this.

2-person set spread with fillet katsu, cheese katsu and cold udon

Starting with the cabbage salad to freshen the mouth -! Fresh cabbage with a nutty dressing is perfect as an appetizer before the tonkatsu 🙂

Fillet katsu: thick, generous pork tenderloin

The fillet katsu looked like a lot at first glance, cut thick, and honestly it was so generous that eating it all alone would have left me stuffed, what a deal bb

Thickly cut fillet katsu at Katsu Monster
Generous plate of fillet katsu

Mild, clean-tasting meat inside a crispy coating made it soft and juicy, just excellent 🤍 It's the kind of taste you never get tired of, no matter how much you eat

A piece of fillet katsu with a crispy coating
Cross-section of fillet katsu with rice

Rice and soup came along too, so it was a hearty meal with the tonkatsu. The soup especially was savory yet clean-tasting, and I kept going back for more 👅

Rice and soup served with the 2-person set

Cheese katsu: four big pieces loaded with mozzarella

The cheese katsu came as 4 big pieces piled with mozzarella, looking like the cheese might melt and drip off any second.

The first bite was crispy outside and juicy inside, with thin, tender loin and the nutty, salty flavor of the cheese really coming through. Dip it in the tonkatsu sauce and the savory depth kicks in, and I thought, no wonder this place is famous as a Yeonnam-dong tonkatsu spot 😗

Cheese katsu piled with mozzarella

Cold udon: a full portion, not a mini

The cold udon that came with the set wasn't a mini bowl but about a full single portion, much bigger than I expected!

Full-portion cold udon served with the set
Cold udon noodles in chilled broth

Cold broth with chewy noodles, need I say more? It's perfect udon for summer, so I hope you try it in weather as hot as these days 👉👈

Gangjeong served as dessert

The full spread, down to gangjeong for dessert

The gangjeong served for dessert wasn't too hard and was moderately sweet, just right as a light palate cleanser :D Everything came out neatly as one set meal, so I enjoyed it from the meal through dessert. Thank you for the food ❤️

Katsu Monster Yeonnam Main Branch: final verdict

Katsu Monster Yeonnam Main Branch is a high-quality Japanese katsu spot in a lovely Yeonnam-dong alley, and I highly recommend it ⭐️⭐️⭐️⭐️⭐️

Where it is

Katsu Monster Yeonnam Main Branch카츠몬스터 연남본점

1st floor, Unit 101, 42-6 Donggyo-ro 38-gil, Mapo-gu, Seoul, South Korea서울특별시 마포구 동교로38길 42-6 1층 101호 카츠몬스터 연남본점

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