Haruna is Ryouga's mother. After Ryouga's father left on his journey, Haruna has been worried that her son will follow in his footsteps. At this point in the series, she hasn't explained why. Later, Haruna recognizes her son's ability to transform into the half man, half Zekrom creature. Haruna first appears in Volume One, Chapter One. (source: http://dogasu.bulbagarden.net/)