Hi Jan! Sorry for my delayed response. There is a following document.
Japan Center for Asian Historical Records (
https://www.jacar.archives.go.jp/aj/meta/default-en )
reference code C13120487500
“
Sentô Shôhô (Detailed Combat Report)”
Yokosuka Kaigun Kôkûtai Iwo Tô Haken Tai Sentôki Tai (Fighter Sq., Iwo Jima Detachment Unit, Yokosuka Naval Air Group), from 24 June 1944 to 3 July 1944.
The report says Warrant Officer Sabro SAKAI got in an interception mission of US Naval aircraft on 24 June in the morning, and an escort mission for torpedo bombers on the same day in the afternoon. The report says victories of the Sq. (17 F6Fs including 6 probable in the morning, 1 F6F in the afternoon) but not individual ones.
Best regards
JY