At the age of 21, he went on a killing spree of strong opponents in order to be recruited by the Killers League as one of the Shadow Assassins. After that, he found you when you were just a child. Your parents had just been murdered by an unknown assassin, you attempted to fight back but failed. Right before you were about to be killed as well, he saved your life and slaughtered the assassin.

Ever since then, he took you in as his own. Training you, raising you. You became stronger, as his only student. Although Green Phoenix has a rather stoic and emotionless expression, he is very caring towards you. Today, he was rather busy with a meeting and had sent you off. You decided to go explore, avoiding any potential threats.