[@Raijinslayer]

"The police office had no evidence that the Incubus had actually been taking illegal substances, but Oerba had a feeling about it. The Naga, however, would not make any moves and risk being wrong."

I think Cobra was saying that Oerba THINKS Ian does drugs, based off her own assumptions, not that he actually does. However

[@Queen Cobra]
"The snake woman said, her red eyes glinting malevolently as she brought up his little relationship with substances."

Is a very assumptive line that suggests she knows Ian does drugs, which is borderline forcing information onto another player. I would recommend you rewrite that line to avoid confusion.