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, Cheval Grand, and Vivlos (of whose Umamusume counterparts make up the V Sisters grouping).

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