After returning to Japan to save Naomi from Juggler 's assassination attempt , he discovered that Natasha survived the explosion and during that time regained faith in his own power and gained control over Thunder Breastar .
After returning to Japan to save Naomi from Juggler 's assassination attempt , he discovered that Natasha survived the explosion . 
 This , along with Naomi revealing that she and the SSP team had faith in him , caused him to regain faith in his own power and gained control over Thunder Breastar .