Also known as: 佐々木主浩
Sasaki "Daimajin" Kazuhiro is a Real Life retired baseball pitcher for the Yokohama Dena Baystars (NPB) and later Seattle Mariners (MLB).
He is also the owner of several accomplished race horses, all of which are offsprings or grandchildren of Halwa Sweet: Namely Verxina (Racehorse), Cheval Grand (Racehorse), and Vivlos (Racehorse) (of whose Umamusume counterparts make up the V Sisters grouping). This was due to him seeing how Halwa Sweet was an accomplished racehorse in spite of the handicap of being born without a tail.