Architect Hirofumi Nakagawa's Fashion Brand "Sein" Holds 1st Collection Exhibition and Order Event in Omotesando

photo: TOMOYUKI KUSUNOSE

Sein, a fashion brand established by architect Hirofumi Nakagawa, will hold an exhibition and order event for its 1st collection, "Invisible Presences: What can I find in the darkness?", which was unveiled at the KAIT Plaza in December 2025. The event will take place over three days, from Friday, May 8 to Sunday, May 10, in Omotesando, Tokyo.

## About Sein

Sein is a fashion brand founded by Hirofumi Nakagawa, a partner at the architectural design firm D.A. Sein attempts to manifest invisible elements such as light, air, and the flow of time alongside the body in the form of clothing, traversing the different scales of architecture and apparel.

Instagram: @sein_hirofuminakagawa

## About the 1st Collection

The 1st collection, announced in a runway format at KAIT Plaza at Kanagawa Institute of Technology last December, created an ambiance of darkness and light within the architectural space. Alongside a live violin performance by Mayuko Ishigami and original music by Sakura Tsuruta, the clothing was presented as an entity that appears with the body within the space.

A portion of the fabrics used in the collection was specially woven in collaboration with Tatsuyasu Watanabe of Watanabe Textile, a textile brand from Fujiyoshida City, embodying a cross-sectional perspective of architectural and apparel textures in the materials.

photo : KOJI SHIMAMURA
photo: TOMOYUKI KUSUNOSE
photo: TOMOYUKI KUSUNOSE
photo : KOJI SHIMAMURA
photo : KOJI SHIMAMURA
photo : KOJI SHIMAMURA

## About the Exhibition and Order Event

This exhibition reconfigures the collection, presented on the runway, into a space where visitors can experience it up close. Attendees can touch the details, materials, and structure of the garments and try them on.

The venue will also feature models, drawings, and photographs of architectural works created by D.A. + Hirofumi Nakagawa. It will cross-sectionally present practices that transcend the scales of clothing and architecture.

## Event Outline

Sein 1st Collection Exhibition & Order Event

Dates: Friday, May 8 – Sunday, May 10, 2026

Hours:
May 8 (Fri) 13:00‒22:00
May 9 (Sat) 10:00‒22:00 (Reception from 18:00 onwards)
May 10 (Sun) 10:00‒20:00

Venue: agriko_laboratory

Reservation: Not required (excluding some time slots)

Location: agriko_laboratory (YH493 Building, 4-9-3 Jingumae, Shibuya-ku, Tokyo) *5-minute walk from Omotesando Station

## Hirofumi Nakagawa

Born in Nagasaki City, Nagasaki Prefecture. After graduating from the Department of Architecture, Faculty of Engineering, Kumamoto University, he pursued a master's degree in Architecture at the Graduate School of Engineering, Tokyo University of Science. After interning at an architectural design firm in Austria, he joined D.A. (formerly O.F.D.A.), an architectural design firm founded by architect Taku Sakauchi. At the same time, as a regional revitalization cooperator, he practiced a dual-base lifestyle and double work, commuting weekly between Tokyo and Fujiyoshida City. Currently based in Tokyo, he works as a partner and director at D.A., managing architectural design and firm operations, while also attending a fashion vocational school and engaging in design activities that span architecture and apparel.

## D.A.

D.A. (Diverse Architects) is a collective of architects who consider various aspects surrounding people, from architecture to fashion, from multiple perspectives and give them form. O.F.D.A.associates was established by Taku Sakauchi in 1998, commencing activities from Yotsuya, Tokyo. From 2016, they also engaged in community-based activities in Fujiyoshida City, Yamanashi Prefecture, such as renovating vacant houses and developing regional concepts. In 2023, Sakauchi welcomed Hirofumi Nakagawa as a partner to form D.A. They are expanding creative projects by leveraging diverse individualities and expertise, transcending fixed locations and professional boundaries.