Ruby is the polar opposite of him as she is extroverted, outgoing, loud, optimistic and communicative compared to her brooding brother. She doesn't share her brother's opinion of hunting down the culprit who killed their mother. Aqua After the tragedy that killed his mother, he changed, becoming cold, calculated, cunning, and discreet, Willing to do whatever means necessary to see his goals of finding his father through. His psychological trauma from Ai's murder tends to resurface anytime