[3] Kaito was scheduled to face Bullseye Ryuta at Shoot Boxing 2018 Young Caesar Cup Central #23 on September 23, 2018.
[4] Kaito was scheduled to face Shota Tezuka at Shoot Boxing S-Cup World Tournament 2018 on November 18, 2018.
[5] Kaito was scheduled to face Kazuya Ueda at Shoot Boxing 2018 Young Caesar Cup act.5 on December 16, 2018, in his fifth and final fight of 2018.
[7] Kaito was scheduled to face the #4 ranked featherweight contender Shota Tezuka at Shoot Boxing 2019 act.4 on September 28, 2019.
[8] Kaito was scheduled to face the #10 ranked featherweight contender TSUTOMU at Shoot Boxing Hanayashiki Extreme.3 on October 27, 2019.
[9] Kaito was next scheduled to fight the #1 ranked Shootboxing featherweight contender Yuki Kasahara at Shoot Boxing 2020 act.1 on February 15, 2020.
[11] Kaito was next scheduled to face Takuya Taira, in a 58.5kg bout, at HOOST CUP KINGS KYOTO 7 on March 7, 2021.
[12] Kaito took part in the DEEP KICK super featherweight tournament held at DEEP☆KICK 51 on April 11, 2021, and was scheduled to face Taiki Sawatani in the semifinals.
[20] Sakaguchi was expected to face the former two-weight REBELS champion Haruto Yasumoto at RISE World Series 2023 Osaka on July 2, 2023.