[2] Yabuki won his next three fights, achieving stoppage victories against Bae Min-Chul, Ryuto Oho and Rikito Shiba, before he was scheduled to face Tsuyoshi Sato for the vacant Japanese light flyweight title on July 26, 2020.
[5] Yabuki, at the time the #1 ranked WBC light flyweight contender, was scheduled to challenge the reigning WBC light flyweight champion Kenshiro Teraji, in Shiro's ninth title defense, on September 10, 2021, at the City Gym in Kyoto, Japan.
He appeared to be ahead on the scorecards heading into the tenth round, which prompted Shiro to increase his pace and volume.
Although Shiro seemed close to finishing him, Yabuki managed to take over the round near its end and unload with volume which forced the referee to stop the fight.
[13] Yabuki faced the undefeated Thanongsak Simsri on September 10, 2022 in what was promoted as a world title prelude.