Inokawa-zeki

He is Raijin's top sumo wrestler and the most senior at the stable who has already reached the Makuuchi level. He is also a trainer in latter's stable as well. Unlike Sakaguchi, he is friendly, patient, cordial, and very generous, but he is also superstitious that he had adopted a stray cat he named "White Star" who serves as his lucky charm.

(Source: Anime+)