Tatsuya Hayama, better known by his ring name DOUKI, is a Japanese professional wrestler signed to New Japan Pro-Wrestling (NJPW), where he is a member of the House of Torture, having joined the group in 2025. He was previously part of Suzuki-gun from 2019 until its disbandment in 2022, then joined Just 5 Guys in early 2023, which later became Just 4 Guys before the group disbanded in 2025. He is a two-time IWGP Junior Heavyweight Champion and a one-time IWGP Junior Heavyweight Tag Team Champion with fellow House of Torture member SHO.

Tatsuya Hayama

Acting Born December 24, 1991 Yokohama, Kanagawa, Japan

Tatsuya Hayama, better known by his ring name DOUKI, is a Japanese professional wrestler signed to New Japan Pro-Wrestling (NJPW), where he is a member of the House of Torture, having joined the group in 2025. He was previously part of Suzuki-gun from 2019 until its disbandment in 2022, then joined Just 5 Guys in early 2023, which later became Just 4 Guys before the group disbanded in 2025. He is a two-time IWGP Junior Heavyweight Champion and a one-time IWGP Junior Heavyweight Tag Team Champion with fellow House of Torture member SHO.

Known For

New Japan Pro Wrestling

DOUKI

World Wonder Ring Stardom

DOUKI

NJPW Road to King of Pro-Wrestling 2026 - Day 1

DOUKI

NJPW Road to King of Pro-Wrestling 2026 - Day 2

DOUKI

NJPW Dominion 6.4 in Osaka-jo Hall 2023

DOUKI

NJPW Dominion 7.12 in Osaka-Jo Hall 2020

DOUKI

NJPW Dominion 6.14 In Osaka-Jo Hall 2026

DOUKI

NJPW Road to Destruction 2026 - Day 7

DOUKI

NJPW Dominion 6.6 in Osaka-jo Hall 2021

DOUKI

NJPW Road to Destruction 2026 - Day 10

DOUKI

NJPW Road to Destruction 2026 - Day 9

DOUKI

NJPW Road to Destruction 2026 - Day 4

DOUKI