Complex sentence: Hideaki Yamazaki is a veteran kickboxer on Japanese famous Krush organization, where Hideaki won -65kg and -63kg titles, being considered one of the best Featherweight Kickboxers in Japan.
Split into simpler sentences: Hideaki Yamazaki is a veteran kickboxer of the famous Japanese Krush organization, where Hideaki won -65kg and -63kg titles. He is considered one of the best Featherweight Kickboxers in Japan.