sentences:  Aoki lost the title back to Harashima on February 19, 2019 at DDT Judgement 2019.Aoki has received criticisms by the mixed martial arts community for his disrespectful victory celebrations and perceived lack of care for his opponents, often causing injuries which are seen as needless.He firstly became known for breaking Keith Wisniewski's arm by waki-gatame, then doing the same with Kuniyoshi Hironaka via flying armbar in a Brazilian jiu-jitsu bout, sidelining him for a year.