Let me guess: they gave you a similar talk that someone gave me.

[Sigh. He might as well explain it, before things get even more out of hand.]

Look. I've been here for months, Adachi. Michel approached me not long after he arrived and automatically knew I had a Persona. Most of the people I've met from the past noticed even with them hidden. In fact, this was all brought up in a meeting before you arrived.

[They already knew. If anything, he's saved someone from becoming roadkill just for showing his face in this tower. So really, which was worse?]