|Born||April 15, 1967|
|Height||5 ft 9 in (1.75 m)|
|Weight||183 lb (83 kg; 13.1 st)|
|Mixed martial arts record|
|Mixed martial arts record from Sherdog|
After a 6–9–1 career in Shooto and Lumax Cup, Kusayanagi volunteered for representing his promotion in Vale Tudo Japan in 1994. He was paired against David Levicki, a wing chun specialist that outweighed him by 90 lb. Kusayanagi charged at him with a takedown, but Levicki blocked it with help of his size and immediately started hitting the back of his head, which was legal under the rules. After dropping Kusayanagi to the ground, Levicki hit him with more punches until knocking him out. It would be Kusayanagi's only match at VTJ.
In 2019, Kusayanagi was arrested under suspicion of paying for sex with a 14-year old child in September 2018.
Mixed martial arts record
|Professional record breakdown|
|29 matches||9 wins||17 losses|
|Loss||9–17–3||Yuki Sasaki||TKO (punches)||Shooto - Las Grandes Viajes 6||November 27, 1998||1||0:46||Tokyo, Japan|
|Draw||9–16–3||Larry Papadopoulos||Draw||Shooto - Las Grandes Viajes 3||May 13, 1998||3||5:00||Tokyo, Japan|
|Loss||9–16–2||Carlos Newton||Submission (armbar)||Shooto - Las Grandes Viajes 2||March 1, 1998||1||2:17||Tokyo, Japan|
|Loss||9–15–2||Todd Bjornethun||TKO (punches)||Shooto - Reconquista 4||October 12, 1997||2||4:01||Tokyo, Japan|
|Loss||9–14–2||Masanori Suda||Decision (unanimous)||Shooto - Reconquista 3||August 27, 1997||3||5:00||Tokyo, Japan|
|Draw||9–13–2||Masato Fujiwara||Draw||Shooto - Reconquista 2||April 6, 1997||3||5:00||Tokyo, Japan|
|Win||9–13–1||Akihiro Gono||Submission (armbar)||Shooto - Let's Get Lost||October 4, 1996||4||2:52||Tokyo, Japan|
|Win||8–13–1||Toru Koga||Submission (armbar)||Shooto - Vale Tudo Junction 2||March 5, 1996||4||2:14||Tokyo, Japan|
|Loss||7–13–1||Susumu Yamasaki||Decision (split)||Lumax Cup - Tournament of J '95||October 13, 1995||2||3:00||Japan|
|Loss||7–12–1||Kyuhei Ueno||TKO (punches)||Shooto - Complete Vale Tudo Access||July 29, 1995||5||1:17||Omiya, Saitama, Japan|
|Win||7–11–1||Yasushi Warita||Submission (armbar)||Shooto - Vale Tudo Access 4||May 12, 1995||1||1:53||Japan|
|Loss||6–11–1||Yuki Nakai||Decision (unanimous)||Shooto - Vale Tudo Access 2||November 7, 1994||4||4:00||Tokyo, Japan|
|Loss||6–10–1||David Levicki||KO (punches)||Vale Tudo Japan 1994||July 29, 1994||1||1:20||Urayasu, Chiba, Japan|
|Loss||6–9–1||Takeshi Tanaka||Decision||Lumax Cup - Tournament of J '94||April 23, 1994||2||4:00||Japan|
|Win||6–8–1||Yasunori Okuda||Submission (armbar)||Lumax Cup - Tournament of J '94||April 23, 1994||1||1:01||Japan|
|Loss||5–8–1||Erik Paulson||Submission (triangle choke)||Shooto - Shooto||June 24, 1993||3||1:46||Tokyo, Japan|
|Loss||5–7–1||Yasuto Sekishima||Decision (unanimous)||Shooto - Shooto||February 26, 1993||5||3:00||Tokyo, Japan|
|Loss||5–6–1||Manabu Yamada||Submission (armbar)||Shooto - Shooto||November 27, 1992||1||1:05||Tokyo, Japan|
|Loss||5–5–1||Naoki Sakurada||Decision (unanimous)||Shooto - Shooto||September 25, 1992||5||3:00||Tokyo, Japan|
|Win||5–4–1||Yutaka Fuji||Submission (armbar)||Shooto - Shooto||May 29, 1992||1||0:00||Tokyo, Japan|
|Loss||4–4–1||Naoki Sakurada||Decision (majority)||Shooto - Shooto||December 23, 1991||5||3:00||Tokyo, Japan|
|Win||4–3–1||Tomohiro Tanaka||Submission (armbar)||Shooto - Shooto||October 17, 1991||1||0:00||Osaka, Japan|
|Draw||3–3–1||Kenji Kawaguchi||Draw||Shooto - Shooto||August 25, 1991||5||3:00||Tokyo, Japan|
|Loss||3–3||Yuichi Watanabe||Submission (kneebar)||Shooto - Shooto||March 29, 1991||1||0:00||Tokyo, Japan|
|Loss||3–2||Tomonori Ohara||KO (punch)||Shooto - Shooto||November 28, 1990||4||0:58||Tokyo, Japan|
|Win||3–1||Satoshi Honma||Submission (triangle choke)||Shooto - Shooto||September 8, 1990||1||1:17||Tokyo, Japan|
|Win||2–1||Kaoru Todori||Submission (armbar)||Shooto - Shooto||March 17, 1990||1||1:16||Tokyo, Japan|
|Loss||1–1||Yoshimasa Ishikawa||KO (spinning back kick)||Shooto - Shooto||October 19, 1989||4||0:13||Tokyo, Japan|
|Win||1–0||Naoki Sakurada||Submission (armbar)||Shooto - Shooto||May 18, 1989||1||0:00||Tokyo, Japan|
- "Kazuhiro Kusayanagi". Sherdog. Archived from the original on October 19, 2014.
- "Kazuhiro Kusayanagi". mixedmartialarts.com. Archived from the original on October 19, 2014.
- "Kazuhiro Kusayanagi". fightmatrix.com. Archived from the original on October 19, 2014.
- Tim Bissell (July 8, 2019). "Shooto veteran Kazuhiro Kusayanagi accused of paying 14-year-old for 'obscene acts'". bloodyelbow.com.