After the loss to Sakurai , Hironaka dropped down to the Lightweight division .
After the loss to Sakurai , Hironaka won his next four consecutive fights , capturing the Cage Force Lightweight Championship after it had been vacated by Mizuto Hirota .
After the loss to Sakurai , Hironaka dropped down to the Lightweight division and won his next four consecutive fights , capturing the Cage Force Lightweight Championship after it had been vacated by Mizuto Hirota .