Open-kitchen tonkatsu near Gangdong Office Station: mixed katsu B

In short

Katsu Monster Gangdong Office Branch is an open-kitchen tonkatsu restaurant on Seongnae-ro near Exit 2 of Gangdong Office Station in Seoul. The writer ordered the mixed katsu B, pairing tenderloin and cheese cutlet, served fresh out of the fryer, with barley tea and free refills of rice and soup. Verdict: it works just as well for solo dining as for a date.

Tenderloin katsu and cheese katsu served together as the mixed katsu B
Katsu Monster Gangdong Office Branch

Good to know

Address
28 Seongnae-ro, 1F, Gangdong-gu, Seoul, South Korea (249m from Exit 2 of Gangdong Office Station)
Hours
Daily, 10:30 AM – 9:00 PM
Parking
Free parking available
Ordered
Mixed Katsu B (tenderloin + cheese)
Other menu items
Basic set, mixed katsu, cheese katsu, udon, cold soba
Included
Barley tea, sauce, rice and soup (refills available on request)

as written by the visitor on Sep 8, 2026

Freshly fried tonkatsu is THIS good!? 🥹 If you want both tenderloin and cheese, go for the mixed katsu B 😉💗

Don't you ever just suddenly, desperately crave tonkatsu (pork cutlet)? That was exactly my mood that day lol.

A plate of tonkatsu at Katsu Monster Gangdong Office Branch

I wanted a crispy-coated, juicy-inside tonkatsu so badly that I went looking, and the place I found and visited was Katsu Monster Gangdong Office Branch :)

Exterior of Katsu Monster Gangdong Office Branch
Katsu Monster Gangdong Office Branch

If you're looking for tonkatsu for lunch or dinner near Gangdong Office Station in particular, the location's great, and it suits everything from solo meals to date-night dinners — so let me introduce it properly~ 😉

Location and hours of Katsu Monster Gangdong Office Branch

  • 📍 Katsu Monster Gangdong Office Branch
  • 🏠 Address: 28 Seongnae-ro, 1F, Gangdong-gu, Seoul, South Korea (249m from Exit 2 of Gangdong Office Station)
  • ⏰ Hours: Daily, 10:30 AM – 9:00 PM
  • 🅿️ Parking: free

Katsu Monster Gangdong Office Branch is an easy walk from Gangdong Office Station, so it's not a hassle even if you're coming by public transit…!

The store actually sits right across from the Gangdong-gu Office, so it's a great stop if you have plans near the district office or are looking for somewhere to eat in Seongnae-dong 👍🏻

Entrance of Katsu Monster Gangdong Office Branch, across from the district office
Katsu Monster Gangdong Office Branch

And since Olympic Park is nearby too, it works well as a date course that flows into a walk afterward 🌿 Perfect when you're not quite ready to head straight home — a walk to help digest, and that's a wrap!

Seating inside Katsu Monster Gangdong Office Branch
A table at Katsu Monster Gangdong Office Branch

An open kitchen where you can watch the frying

Katsu Monster Gangdong Office Branch has an open kitchen, so if you sit at your table you can watch the tonkatsu being prepared and fried right in front of you! 🤤

The open kitchen frying tonkatsu
The open kitchen cooking area at Katsu Monster Gangdong Office Branch

Personally, I love places with a full view into the kitchen like this haha. Being able to watch your order come together right in front of your eyes somehow makes you look forward to it even more~~?! 👀✨

Counter seats with a view into the kitchen
Interior of Katsu Monster Gangdong Office Branch
View of seating and the kitchen at Katsu Monster Gangdong Office Branch

After some menu agonizing, mixed katsu B: tenderloin + cheese

Katsu Monster has quite a lineup — from a basic set to mixed katsu, cheese katsu, udon, cold soba, and more~!?

Menu board at Katsu Monster Gangdong Office Branch
Katsu Monster Gangdong Office Branch

After going back and forth, what I ended up ordering this time was the mixed katsu B — the tenderloin + cheese combo!

Menu listing for the mixed katsu B, tenderloin and cheese
Katsu Monster Gangdong Office Branch

Because I wanted the tenderloin AND the cheese 😋 If you make me pick just one, that's way too hard… so in the end, I'm the type of person who just gets both lol = me lol lol

Barley tea, plus rice and soup refills

And the moment I sat down, one thing quietly caught my eye~!~~! 👀 Instead of plain water, they had nutty, toasty barley tea ready! I'm the type who gets weirdly fond of a place over small details like this lol, and a cup of barley tea really got my appetite going 💖

A cup of barley tea served instead of water
Katsu Monster Gangdong Office Branch

Before the tonkatsu even arrives — the sauce comes out first 🤤

Then rice and soup followed too. They said if you run out, you can just ask for more! Amazing ㅠㅠㅠㅠ what an event ㅠㅠㅠㅠㅠ🥹💗

Basic table setting with tonkatsu sauce, rice, and soup
Katsu Monster Gangdong Office Branch
Rice and soup set on the table
Katsu Monster Gangdong Office Branch

How does the freshly fried mixed katsu B taste?

🐷 The freshly fried tonkatsu arrives!! 🐽 The cutlets that had been busily frying away in the open kitchen finally showed up 🙌🏻

A freshly fried plate of mixed katsu B
Close-up of the hot tonkatsu

I'd been eagerly waiting, and the moment the hot, freshly fried tonkatsu landed on the plate, it already looked delicious just from the visuals 🥹💗

Tenderloin katsu and cheese katsu served together as the mixed katsu B
Katsu Monster Gangdong Office Branch
Cross-section of the crispy-coated katsu

Have to take photos, have to eat — the busiest person in this situation = me lol lol 📸

I quickly snapped some photos and then grabbed a piece right away! With the crispy coating meeting the warm cutlet inside, tonkatsu really has to be eaten the moment it comes out 😋

A piece of tonkatsu picked up with chopsticks

What I especially loved about the mixed katsu B I ordered is that being tenderloin + cheese, you get to enjoy the mild, tender tenderloin katsu alongside the nutty, stretchy cheese katsu, all on one plate 🧀💗

The stretchy cheese katsu pulled apart
Katsu Monster Gangdong Office Branch
Tenderloin katsu dipped in sauce alongside rice

Dip the hot, freshly fried tonkatsu into the sauce, add a spoonful of rice… honestly, that combo is impossible to resist 🤤

Eating tonkatsu together with rice

Why it worked for both solo dining and a date

🥹 Ate well and got nice and full 💗 Before I knew it, the plate was completely cleared lol. So many satisfying points at Katsu Monster Gangdong Office Branch 🍽️

The empty plate after finishing the mixed katsu B
Katsu Monster Gangdong Office Branch

A great spot for a light solo meal, and just as good for a delicious tonkatsu outing with friends or a partner! 👍🏻 (I'm quietly putting it on my revisit list since I want to try the other katsu menu items next time haha.) A solid recommendation if you're looking for good food near Gangdong Office Station 👍🏻 Ate something delicious today, and came home with my mood just as full as my stomach~~😋💗

Where it is

Katsu Monster Gangdong Office Branch카츠몬스터 강동구청점

28 Seongnae-ro, 1F, Gangdong-gu, Seoul, South Korea서울특별시 강동구 성내로 28 1층

Open in Google Maps

Local places · Restaurants