Yeonnam-dong katsu and chicken karaage under ₩30,000: Katsu Monster

In short

Katsu Monster Yeonnam Main Branch is a tonkatsu (breaded pork cutlet) restaurant tucked into a Yeonnam-dong alley in Mapo, Seoul, a 10-minute walk from Hongik University Station. The triple katsu at ₩21,000 plus chicken karaage at ₩8,000 filled a table for ₩29,000, with cheese katsu that stretched, tender fillet katsu, and karaage pieces 5 to 6 times the usual size. With counter seats and a baby chair, Katsu Monster works for solo diners and family meals alike.

Signature photo of the triple katsu at Katsu Monster Yeonnam Main Branch

Good to know

Triple katsu
₩21,000
Chicken karaage
₩8,000
Location
10-minute walk from Hongik University Station, inside a Yeonnam-dong alley
Seating
5-6 tables, counter seats, baby chair available
Included with the meal
Cabbage salad, rice topped with seaweed flakes, sweet rice snack for dessert
Menu range
Katsu by cut, soba, katsu nabe and more; set menus cost less
Price reference
₩30,000 ≈ $22.5 · ₩21,000 ≈ $15.5 · ₩8,000 ≈ $5.9 (2026-09-15)

as written by the visitor on Sep 14, 2026

Today I'm sharing an honest review of a delicious meal at Katsu Monster Yeonnam Main Branch, a go-to spot near Hongdae Station / in Yeonnam-dong!

Signature photo of the triple katsu at Katsu Monster Yeonnam Main Branch

Where is Katsu Monster in Yeonnam-dong, and how far is it from Hongik University Station?

Katsu Monster Yeonnam Main Branch, a favorite near Hongdae Station / in Yeonnam-dong, sits about a 10-minute walk from Hongdae Station, tucked inside an alley — great for getting there by public transit.

Path to Katsu Monster Yeonnam Main Branch inside a Yeonnam-dong alley
View of the Yeonnam-dong alley where Katsu Monster Yeonnam Main Branch is located

1. Outside Katsu Monster Yeonnam Main Branch

Several storefronts sit side by side and it's one of them, set back in the alley, so it might be a bit tricky to find — but just look for the Katsu Monster sign.

Menu board placed outside Katsu Monster Yeonnam Main Branch

There's a menu board outside so you can check it before going in, which is nice.

2. Inside: 5-6 tables, counter seats and a baby chair

The inside is a decent size with about 5-6 tables, plus counter seating, which makes it good for solo dining too.

There's also a baby chair, so it seems like a good spot for family visits.

3. What is on the Katsu Monster menu?

There's a good variety of tonkatsu types, along with soba and katsu nabe (hot pot), and set menus work out cheaper.

Katsu Monster's tonkatsu and set menu board
Menu board listing soba and katsu nabe at Katsu Monster

Seeing the menu photos from Katsu Monster Yeonnam Main Branch, a go-to spot near Hongdae Station / in Yeonnam-dong, just makes you want to eat more, right?

Interior of Katsu Monster Yeonnam Main Branch

The interior is cute too.

Each seat has sauces and utensils laid out neatly for enjoying with the tonkatsu.

Triple katsu and chicken karaage: a full table for ₩29,000

  • Triple katsu ₩21,000
  • Chicken karaage ₩8,000

A full spread like this for around ₩20,000-something is honestly great value, right?

The katsu is set on a rack so the oil can drain off, so it doesn't feel too greasy to eat.

Triple katsu spread served on a rack to drain oil

The cabbage salad that comes as a basic side dish is tasty too.

Cabbage salad served as a basic side dish

Instead of plain rice, it comes topped with seaweed flakes, which is a nice touch.

4. Triple katsu compared: cheese, loin and fillet

Several pieces of different tonkatsu types come out, and each piece is quite large.

Plate of triple katsu with large pieces
Close-up of the triple katsu arranged by type

The cheese katsu's cheese stretched so much I could really enjoy a proper cheese katsu experience.

Cheese katsu with long cheese pull

The cheese katsu at Katsu Monster Yeonnam Main Branch, a favorite near Hongdae Station / in Yeonnam-dong, is the real deal.

Cross-section of cheese katsu next to the triple katsu plate

The loin katsu and fillet katsu also come in several pieces each — I personally love fillet katsu, and it's so tender it's delicious even plain, while the loin katsu is much juicier than usual and not dry at all, so it's easy to eat.

Multiple pieces of loin katsu and fillet katsu

The fillet katsu at Katsu Monster Yeonnam Main Branch, a go-to spot near Hongdae Station / in Yeonnam-dong, is so good I think next time I'd be happy just ordering fillet katsu alone.

A tender piece of fillet katsu
Close-up cross-section of fillet katsu

The fillet katsu at Katsu Monster Yeonnam Main Branch, a favorite near Hongdae Station / in Yeonnam-dong, is seriously so good~~~~

Katsu Monster tonkatsu dipped in salt
A piece of tonkatsu topped with wasabi
A katsu piece dipped in tonkatsu sauce

I tried it dipped in salt, in wasabi, and in the tonkatsu sauce — however you eat it, Katsu Monster Yeonnam Main Branch, a go-to spot near Hongdae Station / in Yeonnam-dong, delivers.

Full table spread alongside the triple katsu

Chicken karaage at ₩8,000: how big are the pieces?

On top of that, I also ordered the chicken karaage, and wow… I've never seen karaage this huge before. It looked like 5-6 times the size of a regular restaurant's karaage.

The oversized chicken karaage from Katsu Monster
Plate of chicken karaage with a crispy exterior

It's not just big — it's properly crispy outside and juicy inside, and it doesn't seem store-bought at all; it looks and tastes like it's made in-house at Katsu Monster Yeonnam Main Branch, a favorite near Hongdae Station / in Yeonnam-dong.

Cross-section of chicken karaage showing thigh meat

The inside seems to be made entirely of chicken thigh meat — so moist and tender it's delicious plain, and just as good dipped in sauce.

Sweet rice snack served for dessert

It even came with a sweet rice snack for dessert, so I got a nice sweet finish.

Great taste, generous portions, good prices, and a friendly owner — there's not a single reason not to go back. I'm so satisfied with Katsu Monster Yeonnam Main Branch, a go-to spot near Hongdae Station / in Yeonnam-dong, that I recommend it to anyone looking for good Hongdae food or Yeonnam-dong tonkatsu.

Where it is

Katsu Monster Yeonnam Main Branch카츠몬스터 연남본점

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

Open in Google Maps

Local places · Restaurants