- Promotion New Japan Pro Wrestling
- Event Type Special Event
- Start Date July 10, 2021
- Event Date July 24, 2021
- Year 2021
- Event Series Summer Struggle
- Country Japan
- Location Sapporo, Japan - Osaka, Japan - Nagoya, Japan
- Arena Makomanai Sekisui Heim Ice Arena - Edion Arena Osaka - Aichi Prefectural Gymnasium
- Attendance 8,794
- Network NJPW World; TV Asahi
- Main Event Hiroshi Tanahashi vs. KENTA
RESULTS
SAPPORO - NIGHT 1 (07/10)- Master Wato defeats Yuya Uemura
- Bullet Club (EVIL & Dick Togo) defeat CHAOS (Tomohiro Ishii & YOH)
- Hiroshi Tanahashi & Mega Coaches (Rocky Romero & Ryusuke Taguchi) defeat Bullet Club (KENTA, El Phantasmo & Yujiro Takahashi)
- United Empire (Jeff Cobb & Great-O-Khan) defeat CHAOS (Kazuchika Okada & SHO)
- Los Ingobernables de Japón (Tetsuya Naito, BUSHI, SANADA & Shingo Takagi) defeat Suzuki-gun (Zack Sabre Jr., Taichi, DOUKI & Yoshinobu Kanemaru)
-
IWGP Junior Heavyweight Championship
El Desperado (c) defeats Taiji Ishimori to retain the title
- Suzuki-gun (El Desperado & Yoshinobu Kanemaru) defeat SHO & Yuya Uemura
- CHAOS (Rocky Romero & Tomohiro Ishii) & Ryusuke Taguchi defeat Bullet Club (EVIL, Taiji Ishimori & El Phantasmo)
- Bullet Club (KENTA & Yujiro Takahashi) defeat Hiroshi Tanahashi & Yota Tsuji
- United Empire (Jeff Cobb & Great-O-Khan) defeat CHAOS (Kazuchika Okada & YOH)
- Shingo Takagi defeats Master Wato
-
IWGP Tag Team Championship
Los Ingobernables de Japón (Tetsuya Naito & SANADA) defeat Dangerous Tekkers (Zack Sabre Jr. & Taichi) (c) to win the titles
- Suzuki-gun (El Desperado, DOUKI & Yoshinobu Kanemaru) defeat CHAOS (SHO, YOH & Robbie Eagles)
- Hiroshi Tanahashi & CHAOS (Tomohiro Ishii & YOSHI-HASHI) defeat Bullet Club (EVIL, KENTA & Yujiro Takahashi)
- United Empire (Jeff Cobb & Great O-Khan) defeat CHAOS (Kazuchika Okada & Hirooki Goto)
- Los Ingobernables de Japón (BUSHI & Shingo Takagi) defeat Tomoaki Honma & Master Wato
- Zack Sabre Jr. vs. SANADA ends in a Draw via Double Pin
- Taichi defeats Tetsuya Naito
OSAKA - NIGHT 2 (07/23)
- Bullet Club (Jado, El Phantasmo & Taiji Ishimori) defeat CHAOS (Hirooki Goto & Rocky Romero) & Ryusuke Taguchi
- Hiroshi Tanahashi & CHAOS (Tomohiro Ishii & Toru Yano) defeat Bullet Club (EVIL, KENTA & Yujiro Takahashi)
- United Empire (Jeff Cobb & Great O-Khan) defeat CHAOS (Kazuchika Okada & YOSHI-HASHI)
- Los Ingobernables de Japón (BUSHI & Shingo Takagi) defeat Tomoaki Honma & Master Wato
- SANADA defeats Taichi
- Tetsuya Naito defeats Zack Sabre Jr.
NAGOYA (07/24)
- CHAOS (Robbie Eagles, SHO & YOH) defeat Suzuki-gun (El Desperado, DOUKI & Yoshinobu Kanemaru)
- CHAOS (Hirooki Goto, Rocky Romero & YOSHI-HASHI) & Ryusuke Taguchi defeat Bullet Club (Jado, El Phantasmo, Taiji Ishimori & Yujiro Takahashi)
- CHAOS (Kazuchika Okada & Toru Yano) defeat United Empire (Jeff Cobb & Great O-Khan)
- Los Ingobernables de Japón (BUSHI & Shingo Takagi) defeat Kota Ibushi & Master Wato
- EVIL defeats Tomohiro Ishii
- Hiroshi Tanahashi defeats KENTA