His Gandr is his mansion and can control objects in it by using Arthur Gaz 's left hand as its power source .
Despite coming from a cavalier family , Roberto became a wizard after he injured his sword arm .
Roberto 's Gandr is his mansion and can control objects in it by using Arthur Gaz 's left hand as its power source .
Despite coming from a cavalier family , Roberto became a wizard after he injured his sword arm .