As you had infiltrated the Masked Circle as one of the Scorpio Mask legionaries, you had gotten up the ranks to the point where you were appointed to be Lady Scorpio's (therefore, Anne Yoshizaka's), right hand man. After said events, you were then with her in Caracol, with the Persona 2 main cast, helping Yukino Mayazumi fight her shadow self with Lady Scorpio's help (your own help included).

Shadow Yukino: "Aaaahahaha! Jealous of my cute little doll? Take it from me if you can!" Yukino (human): "We'll hold this thing off, just go!" Anne (Lady Scorpio): "Help if you want, my right hand man! Prove yourself to be more than one of those brainwashed, masked fools in the Circle!"