TEAMS
Members
The undersea-aging work is carried out by the diving members of Minami-Izu, who have been working together for over 10 years. SUBRINA would not be possible without their efforts.
Nakagi, home to Hirizo Beach, is a famous diving spot that attracts many tourists during the summer season.
Undersea-aging work is carried out during the winter season, avoiding the busy summer period, together with local divers.

Eisuke Aoki
Commonsense.inc
(SUBRINA operations)
President
Born in Yokohama City. After working as an executive at an electronics manufacturer and an equipment manufacturing company, he founded Commonsense Co., Ltd. in 2011. He is involved in underwater aging projects nationwide, including SUBRINA.
J.S.A Sommelier, Diver

Mariko Sumino
Commonsense.inc
(SUBRINA operations)
Brand Manager
Born in Shizuoka City. After working in planning and design positions at an electronics manufacturer and a lifestyle company, she joined Commonsense Co., Ltd. in 2020. She oversees all creative aspects of SUBRINA.
J.S.A Sommelier, WSET Level3, Diver

Ryuuji Yamaguchi
Marine Star Co., Ltd.
President
Born in Minami-Izu Town. He operates the only diving shop in Nakagi, "Nakagi Marine Center," and oversees all operations related to the sea. He oversees all SUBRINA operations in Minami-Izu.
> Nakagi Marine Center

Tetsuro Shimomiya
President, Kaiteichozoko Co., Ltd.
President, South Blue
Born in Yamato City. He runs a diving shop and is also a fisherman. He founded the underwater storage service company Kaiteichozoko Co., Ltd. in 2021. He has been involved with SUBRINA as a diver since its inception.
> Kaiteichozoko > South Blue

Makoto Arimatsu
MAKS Co., Ltd.
President
Born in Chigasaki City. After training in the seas around the world, he established the diving shop "Mikomoto Hammers," specializing in diving at Mikomoto Island. In 2021, he launched the undersea-aged liquor service "Beautiful Sea Winery." He oversees the monthly inspection work for SUBRINA.
> Mikomoto Hammers > Uminowinery

Akio Shibuya
Chief Guide, Mikomoto Hammers
Manager, Hammers Academy
Born in Matsudo City. Chief Guide at Mikomoto Hammers. He is responsible for the monthly inspection and undersea-aging work for SUBRINA.
"We hope everyone will visit Minami-Izu, rich in nature throughout the four seasons. We are sure you will love it."
> Mikomoto Hammers > Hammers Academy

Takumi Sekiguchi
Mikomoto Hammers
Guide
Born in Koga City. Guide and instructor at Mikomoto Hammers. He is responsible for the monthly inspection and undersea-aging work for SUBRINA.
"We mainly conduct diving license courses to see schools of hammerhead sharks based in Minami-Izu Town. Please come visit Minami-Izu!"
> Mikomoto Hammers > Hammers Academy

Mutsuya Yamaguchi
DIVING GUIDE YAMAGUCHI
President
Born in Tokyo. He operates the diving shop "DIVING GUIDE YAMAGUCHI," guiding at diving points representing Izu, such as Izu Ocean Park, Kumomi, and Mikomoto.
"The sea in Minami-Izu is very beautiful, so please come and visit."
> DIVING GUIDE YAMAGUCHI