Presumably it served as a battle ally like other Persona did. However, it was a large creature - how did he manage to keep it, then? Seeing that it functioned as a pet or a similar creature companion of some sort...

But more about that later. Courtesy first.

"I see." Takakage nodded, giving the other a faint smile. "Ah - please pardon my lapse in conduct. May I know your name?"