One eye-opening reply came when he was quizzed about what has been the most challenging part of his journey so far. The Vinnytsia native replied, "When I arrived in Japan, I didn't speak the language, so when I joined sumo, learning Japanese, rather than the training, was the hardest point." That was a stunning answer, given that Aonishiki's mastery of the language arguably outstrips even his rapid rise to dominance inside the ring. Former yokozuna Kakuryu is perhaps the only other foreign-born rikishi with the ability to express themselves so eloquently in Japanese, and even hwasn't't as fluent as quickly as Aonishiki.