However, after 2006, the World Jiu-Jitsu Championship was held in California, US and Roberto struggled to secure sponsorships to compete abroad, leading to a temporary absence from the sport.

On May 1, 2011, Roberto received his black belt from his father, Adilson de Souza, who died from an illness shortly after the ceremony.

When he first came to Japan, he worked as a factory worker while practicing and teaching at a bull terrier martial arts gym with his two older brothers.

[6][7] On December 2, 2007, Satoshi participated in the DEEP X 02 Real King Tournament in the 76 kg class, winning the championship after defeating Takayuki Muramatsu, Kei Ouchi, and Sotaro Yamada in successive rounds.

On October 10, 2010, the subject participated in the DEEP X 06 Brazilian Jiu-Jitsu Super Tournament in the 75 kg class, defeating three black belt holders, Kei Ochi, Tetsuya Kondo, and Koji Shimazaki to win the championship.

In April 2012, Satoshi won the gold medals at the Abu Dhabi World Professional Jiu-Jitsu Championship in the black belt Lightweight, defeating Davi Ramos and Lucas Lepri.

In June 2017, the subject faced Lucas Lepri in the World Jiu-Jitsu Championship black belt lightweight final, but withdrew due to a shoulder injury and finished as runner-up.

On June 9, 2018, Satoshi participated in QUINTET FIGHT NIGHT in TOKYO as part of "TEAM HALEO", defeating Daisuke Nakamura, David Garmo, and Yoshihiko Matsumoto before going to a timed daw with Masahiro Iwasaki.

[12] He made his mixed martial arts debut on October 20, 2013, at the Real Fight MMA Championship 3 in China, before winning his sophomore performance against Doo Je Jung in December 2014 via rear-naked choke.

On December 5, 2015, he faced Ryuki Ueyama in the first round of the REAL.3 super lightweight (74.2 kg) throne decision tournament, winning by arm-triangle choke.

On March 12, 2016, he faced Yuta Kaneko in the semi-finals of the REAL.4 Super Lightweight Championship Tournament and won by TKO via ground and pound.