His Soul Cultivation hadn't reached the Master Cultivation Level, but his Soul Power was dense, pure and incredibly powerful, even when compared to Master Level Souls.
Along with that, even if he held back his aura, cultivation level and his capabilities, souls and people with sharp senses couldn't help but fear him slightly.
The reason for that was his Death Devouring Daggers that had become his Soul Weapon and Integratable Weapon and struck fear in anyone that was in their presence.
Adam had only used his Soul Vision and switched into his Soul Form a single time and had no need to do so and also was wary of doing so.
He could hide his Physical and Soul Cultivation really well while in his Physical Form, to the point that even his master was unable to truly gauge his cultivation level or power.