Isomaru Suisan Seafood Restaurant - Kanto Area

If you seek an authentic and vibrant Japanese seafood experience, visit Isomaru Suisan in Roppongi. The location is perfect, right in the city center and extremely easy to find. We ordered the Seafood Set Course, and the sheer volume and variety were incredible. The course included plenty of food: Sashimi, Sushi, Eel, Seaside Grill, and Shrimp Fry. A major highlight was the Shrimp Fry, which was perfectly crispy and juicy—easily the best part of the abundant meal. The atmosphere is fantastic! The restaurant spans two lively floors (2F), capturing the feel of a traditional izakaya. The ambiance is excellent and truly immersive. For high-quality, generous portions of seafood and a great traditional setting, Isomaru Suisan is a must-try. Highly recommended!

I had a great time dining at Isomaru Suisan. The seafood was incredibly fresh, and everything we ordered tasted delicious. The grilled abalone was a real highlight — each person gets a whole one, and it was tender and full of flavor. The crab miso was also outstanding, rich and creamy. We also loved the fried shrimp, which were perfectly crispy on the outside and juicy inside, and the sashimi was fresh and nicely cut. One of the best parts was being able to grill some of the seafood ourselves on the tabletop grill — it made the whole experience even more fun. If you’re looking for a casual spot with great seafood and a lively atmosphere, Isomaru Suisan is definitely worth a visit. I’d happily come back again.

Delicious! It shattered my stereotype of these early internet-famous restaurants. The fried shrimp is seriously, seriously HUGE! I was completely stunned when it was brought out. Besides the crab shell miso, what impressed me most was the grilled seafood called "Hamayaki." The abalone was still alive! And the surf clams? When grilled, they were so fresh they made my eyebrows fall off! 6600 yen per person made me wonder if it was a little pricey, but it's totally worth it, I ate until I was stuffed!

This was my first time at Isomaru Suisan, and I was very satisfied with both the food and the service. I enjoyed the beachside grilling style at the table, and the sashimi platter was generous, making me feel it was a great value for the price. I recommend it to anyone who wants to enjoy seafood. Also, the ingredients were very fresh, and the abalone was still actually alive and moving! The staff was also polite, and I was able to enjoy my meal comfortably. I would like to visit again.

very freshly food and very delicious meal in evening. At first, i think the portions is small, but when you see it reality, it vary large, especially hotate and eel

Very worthwhile, and the service is excellent. When we arrived at the restaurant, some of the dishes were already prepared, and the other dishes were served quickly. The only downside is that there was no menu description when ordering, so we weren't sure what food was available 😂

The set menu is very generous, including grilled seafood, sashimi, sushi, cooked eel, and more. It also includes a complimentary drink per person. I chose Coke, which came in a glass bottle.

Went to the Akihabara store, and at first the staff didn't know we had made a reservation. Finally, we used a translation app to show the staff in Japanese that we had a reservation, and it was resolved.

service: excellent service, servers are friendly and understandable

It is worth buying again and participating next time. I recommend it to people who come to travel here.