Where can I find the best all-you-can-eat sashimi in Bangkok?

Kaisen Tengoku, on the 4th floor of DONKI Mall Thonglor, is a popular choice. It offers all-you-can-eat sashimi and seafood directly air-flown from Japan multiple times a week, including salmon, scallops, and red shrimp.

Is there an all-you-can-eat sashimi buffet in Thonglor?

Yes, Kaisen Tengoku at DONKI Mall Thonglor (4th floor) offers 60-minute and 90-minute all-you-can-eat sashimi courses starting from 999 THB, along with a wide buffet menu of hand rolls, tempura, oden, curry, and udon.

Is there an all-you-can-eat Japanese restaurant in Bangkok?

Kaisen Tengoku at DONKI Mall Thonglor is an all-you-can-eat Japanese seafood restaurant, offering fresh sashimi and a variety of Japanese side dishes at reasonable prices.

2026.10.23

Sushi

Kaisen Tengoku Donki Mall Thonglor Branch

KondoKaori

Detailed menu poster for the all-you-can-eat sashimi and seafood buffet at Kaisen Tengoku (海鮮天国), DONKI Mall Thonglor in Bangkok. The left side outlines pricing for the 60-minute Course (Adult 999 THB++) and 90-minute Course (Adult 1,199 THB++), featuring over 10 varieties of fresh sashimi and a diverse buffet menu including hand roll sushi, tempura, oden, curry, and udon. The right side highlights "Today's Fish Selection," a made-to-order menu featuring assorted sashimi platters, sweet shrimp yukke, yellowtail with sesame sauce, and various oyster dishes (grilled, steamed, and baked with cheese).

Detailed menu page from Kaisen Tengoku at DONKI Mall Thonglor in Bangkok, displaying a wide variety of Japanese side dishes available in their all-you-can-eat buffet. The image features 28 numbered dishes with names in Thai, English, and Japanese, including breaded fried oysters, grilled salmon belly, butter-grilled scallops, grilled red shrimp, salt-grilled Pacific saury, sweet shrimp karaage, simmered yellowtail with daikon, tuna poke bowl, various sushi rolls, Japanese steamed egg custard, and Seafood Tom Yum Soup. A note at the bottom right states a "Leftover Food Charge" of 100 THB per 100g.

Kaisen Tengoku Donki Mall Thonglor
All-You-Can-Eat Sashimi Directly imported from Japan (air freight), Enjoy unlimited fresh seafood and side dishes
This restaurant is highly praised as fresh fish and seafood arrive multiple times a week from Japan, allowing diners to enjoy authentic quality on par with what you’d find locally in Japan, all while in Thailand!

Promotions
Menu
Shop Information

Kaisen Tengoku Donki Mall Thonglor

All-you-can-eat sashimi directly imported from Japan, thick-cut salmon, sweet scallops, and red shrimp among other options
No need to go to a high-end sushi restaurant; you will be fully satisfied!
Enjoy authentic seafood at a reasonable price.

Make your own original seafood rice bowl, hand rolls, and seafood chazuke to your heart’s content.
There are also plenty of side dishes available.

With such generous portions of premium seafood, dining here guarantees a fun and highly Instagrammable experience!

Promotions

Promotional banner for Kaisen Tengoku on the 4th floor of DONKI Mall Thonglor, featuring a platter of fresh sashimi like salmon, tuna, shrimp, and oysters. The banner prominently displays an "All-you-can-eat Sashimi" offer and a "200B Discount Coupon" for one-time use, written in Japanese, Thai, and English.

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Shop Information

Name

Kaisen Tengoku Donki Mall Thonglor Branch
(4th floor, Donki Mall Thonglor)

Address (Post code)

4th floor, DONKI Mall Thonglor, 107 Soi Sukhumvit 63, Khlong Tan Nuea, Watthana, Bangkok
Postal Code: 10110

MAP

View Map

Business hours

11:00~22:00
Last order 21:00

CALL

091-415-0666

PRICE RANGE

800–1000B

PARKING

Available

Delivery & TakeAway

Not Available

REVIEW

A close-up shot of a Japanese-style tuna poke bowl served in a black bowl at Kaisen Tengoku. The dish features fresh diced raw red tuna, avocado, and cucumber over white rice, garnished with toasted sesame seeds and shredded nori seaweed. Photographed by Kaori Kondo.

A close-up shot of Thai-style raw shrimp served on a black plate at Kaisen Tengoku. The fresh shrimp are topped with sliced garlic and red chilies, accompanied by lime slices, fresh mint, and green vegetables. A condiment dish in the foreground holds a spicy green seafood sauce and crispy fried shallots. Photographed and reviewed by Kaori Kondo.

A 4-split collage photo showcasing various buffet items at Kaisen Tengoku, photographed and reviewed by Kaori Kondo. Top-left shows a pot filled with Japanese oden; top-right features a grilled fish collar (kama) served with grated daikon radish; bottom-left displays white rice in a traditional wooden tub (ohitsu); and bottom-right shows self-service dispensers for udon broth and ochazuke broth alongside small bowls of udon noodles.

A 4-split collage photo showcasing various grilled seafood and side dishes at Kaisen Tengoku, photographed and reviewed by Kaori Kondo. Top-left features a whole grilled squid with savory sauce; top-right shows glazed grilled squid pieces; bottom-left displays butter-grilled whelks; and bottom-right presents baked salmon with cheese and mushrooms in foil.

Not only the sashimi but also the made-to-order buffet dishes were absolutely fantastic.

While daily specials change based on availability, the standard items can be confirmed in the physical menu, and you can easily view everything via the QR ordering system, which is very convenient.

The Thai-style dishes prepared with fresh Japanese seafood, especially the red shrimp, were absolutely delicious! It’s a rare find that you won’t easily see elsewhere! I also had a great time customizing my own seafood bowls and hand rolls.