Kaisen Viking Iroha Prif Swyddogaeth: Tu Mewn Bwyty by Daiki Inoshita is a highly esteemed winner of the very prestigious 2026 Gwobr Arian A' Design Award in Mewnol Competition Category.
ArianMewnol· 2026
Kaisen Viking Iroha Prif Swyddogaeth: Tu Mewn Bwyty
Client: H.I.S. Co., Ltd.
Gwobr Arian A' Design Award Winner in Mewnol Category
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- Verified Award Winner
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The Design
About Kaisen Viking Iroha Prif Swyddogaeth: Tu Mewn Bwyty
Testun y Llyfr: Mae Kaisen Viking Iroha yn fwyty bwffe capasiti uchel sy'n ailddiffinio bwyta fel profiad gofodol a threfol. Mae cownter bwffe sydd wedi'i leoli'n ganolog yn trefnu cylchrediad yn ddolen barhaus, gan leihau tagfeydd tra'n gwella eglurder. Mae'r cynllun yn integreiddio golygfeydd panoramig o Tokyo Dome City fel elfen weithredol o'r tu mewn, gan drawsnewid y ddinas yn gefndir deinamig. Mae carreg naturiol a phren graen-pen yn cyflwyno gwydnwch a dyfnder deunyddiol. Mae'r prosiect yn dyrchafu bwyta bwffe yn system ofodol drochol.
The Recognition
About the Gwobr Arian A' Design Award
Mae Kaisen Viking Iroha Prif Swyddogaeth: Tu Mewn Bwyty yn enillydd Gwobr Arian A' Design Award, cydnabyddiaeth hynod fawreddog a roddir i ddyluniadau o'r radd uchaf, hardd a thrawiadol. Mae enillwyr Arian yn weithiau tra disglair a hynod greadigol sydd yn darlunio arbenigedd, dawn a chraffter rhagorol eu dylunwyr. Disgwylir i Kaisen Viking Iroha Prif Swyddogaeth: Tu Mewn Bwyty fod yn waith gwych ac esiampl, yn nodedig o broffesiynol ac yn ddwfn arloesol. Mae'r dyluniad buddugol hwn o Wobr Arian A' Design Award yn ddyfais hynod nodedig a edmygir sydd yn elwa ac yn symud ymlaen ffiniau celf, gwyddoniaeth, dylunio a thechnoleg. Mae Kaisen Viking Iroha Prif Swyddogaeth: Tu Mewn Bwyty yn greadigaeth y cenfigennir wrthi yn eang, sydd yn deffro dyheadau, yn cyflwyno teimladau cadarnhaol ac yn cynnau rhyfeddod a syndod.
Behind the Design
Press Kit
Credits, team members and technical details provided by the designer.
- Unique Properties
- Kaisen Viking Iroha reinterprets the conventional buffet by synchronizing spatial composition, circulation, and urban context. A centrally positioned buffet counter organizes movement, while the surrounding panoramic views of Tokyo Dome City establish a continuous dialogue between interior and exterior.
The design shifts the buffet from a purely functional dining system into a layered experience where guests engage with food, space, and city simultaneously. Material selections such as natural stone and end-grain wood reinforce durability while expressing the passage of time, creating a tactile and atmospheric depth rarely achieved in high-turnover dining environments. - Dimensions & Packaging
- Restaurant interior project featuring a centrally positioned buffet counter, fixed seating zones, and integrated bar functions. Materials include natural stone, end-grain wood, metal framing, and indirect lighting systems. The layout was designed to accommodate high guest turnover while maintaining clear circulation and efficient staff access within a large-scale dining environment.
- Tags
- Restaurant Interior, Buffet Restaurant, Japanese Contemporary Design, Interior Architecture, Material Expression, Dining Experience, Spatial Circulation, Urban Dining Experience
- Production Technology
- The interior was realized through close coordination between spatial planning, custom-built buffet counters, and integrated lighting systems. Natural stone surfaces and end-grain wood elements were precisely fabricated to withstand intensive daily use. Layered indirect lighting enhances material depth while supporting operational clarity. The project balances craftsmanship with efficiency through detailed construction management and material selection.
- Design Challenge
- The primary challenge was to integrate high operational efficiency with a meaningful spatial identity that connects the dining experience to its urban surroundings. This required balancing durability, circulation clarity, and visual openness without compromising comfort or atmosphere.
- Research
- Type of Research: Spatial and operational design research.
Research Objectives: To elevate the buffet dining experience through spatial quality.
Methodology: Analysis of circulation, material durability, and user behavior.
Results: Enhanced operational efficiency and a redefined dining experience that integrates urban context as a spatial asset. The project demonstrates that high-turnover restaurants can achieve both performance and experiential depth by aligning circulation, materiality, and environmental integration. - Inspiration
- The project redefines the buffet as an urban dining experience, integrating the surrounding Tokyo Dome Cityscape into the interior as an active spatial component. Inspired by the Japanese concept of borrowed scenery, the design captures the energy, light, and temporal shifts of the city, transforming them into an integral part of the dining experience.
Rather than isolating the interior from its context, the project embraces the city as a dynamic backdrop, allowing guests to experience both the immediacy of food and the evolving presence of the urban environment simultaneously. - Project Duration
- The project was designed and completed in 2025 in Tokyo Dome City, Tokyo, Japan.
- Operation Flow
- Guests enter through a defined entrance sequence and naturally circulate around the central buffet counter. Seating areas offer multiple dining options, while staff workflows are optimized through clear zoning and direct access to service areas.
- Patents
- Copyrights belong to the project owner, 2025.
- Image Credits
- Image #1: Photographer Satoru Umetsu (Nacása & Partners Inc.), Kaisen Viking Iroha, 2025.
Image #2: Photographer Satoru Umetsu (Nacása & Partners Inc.), Kaisen Viking Iroha, 2025.
Image #3: Photographer Satoru Umetsu (Nacása & Partners Inc.), Kaisen Viking Iroha, 2025.
Image #4: Photographer Satoru Umetsu (Nacása & Partners Inc.), Kaisen Viking Iroha, 2025.
Image #5: Photographer Satoru Umetsu (Nacása & Partners Inc.), Kaisen Viking Iroha, 2025.
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